diff --git a/.gitignore b/.gitignore
index 094f594..87df1ff 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 .DS_store
 .sass-cache
-_theme-options-temp.scss
-_gtk-base-temp.scss
+*-temp.scss
 *.css.map
 src/main/gtk-3.0/gtk*.css
 src/main/gtk-4.0/gtk*.css
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a735a62..5b6b4f5 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,9 +2,7 @@
 
 ## Summary
 
-- Do not edit the CSS directly, edit the source SCSS files and process them with SASS (run
-  `./parse-sass.sh` when you have the required software installed, as described below)
-- To be able to use the latest/adequate version of sass, install sassc.
+To be able to use the latest/adequate version of sass, install sassc.
 
 ## How to tweak the theme
 
diff --git a/clean-git.sh b/clean-git.sh
index 4449e90..7c3a88a 100755
--- a/clean-git.sh
+++ b/clean-git.sh
@@ -3,5 +3,7 @@
 # Clean ignored files
 #
 
+# TODO: integrate with Bridge.sh
+
 git clean -d -f -X
 git add .
diff --git a/install.sh b/install.sh
index 0116f60..b14f792 100755
--- a/install.sh
+++ b/install.sh
@@ -18,7 +18,6 @@ source "${REPO_DIR}/lib-install.sh"
 # Customization, default values
 colors=("${COLOR_VARIANTS[@]}")
 opacities=("${OPACITY_VARIANTS[@]}")
-background="blank"
 
 usage() {
   # Please specify their default value manually, some of them are come from _variables.scss
@@ -33,6 +32,7 @@ usage() {
   helpify "-p, --panel"          "[$(IFS='|'; echo "${PANEL_OPACITY_VARIANTS[*]}")]"  "Set panel transparency"                           "Default is 15%"
   helpify "-s, --size"           "[$(IFS='|'; echo "${SIDEBAR_SIZE_VARIANTS[*]}")]"   "Set Nautilus sidebar minimum width"               "Default is 200px"
   helpify "-i, --icon"           "[$(IFS='|'; echo "${ICON_VARIANTS[*]}")]"           "Set 'Activities' icon"                            "Default is 'standard'"
+  # Not sure if "background" is even needed here
   helpify "-b, --background"     "[default|blank|IMAGE_PATH]"                         "Set gnome-shell background image"                 "Default is BigSur-like wallpaper"
   helpify "-HD, --highdefinition"         ""                                          "Set to High Definition size"                      "Default is laptop size"
   helpify "--normal, --normalshowapps"    ""                                          "Set gnome-shell show apps button style to normal" "Default is bigsur"
diff --git a/lib-install.sh b/lib-install.sh
index ef64c8a..09bc381 100755
--- a/lib-install.sh
+++ b/lib-install.sh
@@ -25,7 +25,7 @@ source "${REPO_DIR}/lib-core.sh"
 install_theme_deps() {
   if ! has_command glib-compile-resources || ! has_command sassc || \
     ! has_command xmllint || [[ ! -r "/usr/share/gtk-engines/murrine.xml" ]]; then
-    echo; prompt -w "'glib2.0', 'sassc', 'xmllint', 'libmurrine' are required for theme installation."
+    echo; prompt -w "'glib2.0', 'sassc', 'xmllint', and 'libmurrine' are required for theme installation."
 
     if has_command zypper; then
       rootify zypper in -y sassc glib2-devel gtk2-engine-murrine libxml2-tools
@@ -47,46 +47,34 @@ install_theme_deps() {
 }
 
 install_gdm_deps() {
-  if [[ ! "$(which glib-compile-resources 2> /dev/null)" || ! "$(which xmllint 2> /dev/null)" ]]; then
-    echo; prompt -w "'glib2.0' 'xmllint' are required for theme installation."
+  #TODO: @vince, do we also need "sassc" here?
+
+  if ! has_command glib-compile-resources || ! has_command xmllint || \
+    ! has_command sassc; then
+    echo; prompt -w "'glib2.0', 'xmllint', and 'sassc' are required for theme installation."
 
     if has_command zypper; then
-      rootify zypper in -y glib2-devel libxml2-tools
+      rootify zypper in -y glib2-devel libxml2-tools sassc
     elif has_command apt; then
-      rootify apt install -y libglib2.0-dev-bin libxml2-utils
+      rootify apt install -y libglib2.0-dev-bin libxml2-utils sassc
     elif has_command dnf; then
-      rootify dnf install -y glib2-devel libxml2
+      rootify dnf install -y glib2-devel libxml2 sassc
     elif has_command yum; then
-      rootify yum install -y glib2-devel libxml2
+      rootify yum install -y glib2-devel libxml2 sassc
     elif has_command pacman; then
-      rootify pacman -S --noconfirm --needed glib2 libxml2
+      rootify pacman -S --noconfirm --needed glib2 libxml2 sassc
     else
-      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies!"
+      prompt -w "WARNING: We're sorry, your distro isn't officially supported yet."
+      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies. We'll continue the installation in 15 seconds"
+      prompt -w "INSTRUCTION: Press 'ctrl'+'c' to cancel the installation if you haven't install them yet"
+      start_animation; sleep 15; stop_animation
     fi
   fi
 }
 
 install_beggy_deps() {
-  if ! has_command sassc; then
-    echo; prompt -w "'sassc' are required for this option."
-
-    if has_command zypper; then
-      rootify zypper in -y sassc
-    elif has_command apt; then
-      rootify apt install -y sassc
-    elif has_command dnf; then
-      rootify dnf install -y sassc
-    elif has_command yum; then
-      rootify yum install -y sassc
-    elif has_command pacman; then
-      rootify pacman -S --noconfirm --needed sassc
-    else
-      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies!"
-    fi
-  fi
-
   if ! has_command convert; then
-    echo; prompt -w "'imagemagick' are required for this option."
+    echo; prompt -w "'imagemagick' are required for background editing."
 
     if has_command zypper; then
       rootify zypper in -y ImageMagick
@@ -99,7 +87,10 @@ install_beggy_deps() {
     elif has_command pacman; then
       rootify pacman -S --noconfirm --needed imagemagick
     else
-      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies!"
+      prompt -w "WARNING: We're sorry, your distro isn't officially supported yet."
+      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies. We'll continue the installation in 15 seconds"
+      prompt -w "INSTRUCTION: Press 'ctrl'+'c' to cancel the installation if you haven't install them yet"
+      start_animation; sleep 15; stop_animation
     fi
   fi
 }
@@ -119,7 +110,10 @@ install_dialog_deps() {
     elif has_command pacman; then
       rootify pacman -S --noconfirm --needed dialog
     else
-      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies!"
+      prompt -w "WARNING: We're sorry, your distro isn't officially supported yet."
+      prompt -w "INSTRUCTION: Please make sure you have installed all of the required dependencies. We'll continue the installation in 15 seconds"
+      prompt -w "INSTRUCTION: Press 'ctrl'+'c' to cancel the installation if you haven't install them yet"
+      start_animation; sleep 15; stop_animation
     fi
   fi
 }
@@ -138,12 +132,14 @@ install_beggy() {
     blank)
       cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blank.png"          "${WHITESUR_TMP_DIR}/beggy.png" ;;
     default)
-      if [[ "${no_blur}" == "false" || "${darken}" == "true" ]]; then
-        install_beggy_deps && convert "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-default.png" ${CONVERT_OPT} "${WHITESUR_TMP_DIR}/beggy.png"
+      if [[ "${no_blur}" == "false" && "${darken}" == "false" ]]; then
+        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blur.png"         "${WHITESUR_TMP_DIR}/beggy.png"
       elif [[ "${no_blur}" == "false" && "${darken}" == "true" ]]; then
-        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blur.png"          "${WHITESUR_TMP_DIR}/beggy.png"
+        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blur-darken.png"  "${WHITESUR_TMP_DIR}/beggy.png"
+      elif [[ "${no_blur}" == "true" && "${darken}" == "false" ]]; then
+        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-default.png"      "${WHITESUR_TMP_DIR}/beggy.png"
       else
-        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-default.png"       "${WHITESUR_TMP_DIR}/beggy.png"
+        cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-darken.png"       "${WHITESUR_TMP_DIR}/beggy.png"
       fi
       ;;
     *)
@@ -156,19 +152,6 @@ install_beggy() {
   esac
 }
 
-install_beggy_blur() {
-  local CONVERT_OPT=" -scale 1280x -blur 0x35 -fill black -colorize 25% "
-
-  case "${background}" in
-    blank)
-      cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blank.png"          "${WHITESUR_TMP_DIR}/beggy-blur.png" ;;
-    default)
-      cp -r "${THEME_SRC_DIR}/assets/gnome-shell/common-assets/background-blur.png"           "${WHITESUR_TMP_DIR}/beggy-blur.png" ;;
-    *)
-      install_beggy_deps && convert "${background}" ${CONVERT_OPT}                            "${WHITESUR_TMP_DIR}/beggy-blur.png" ;;
-  esac
-}
-
 install_darky() {
   local opacity="$(destify ${1})"
   local theme="$(destify ${2})"
@@ -229,7 +212,6 @@ install_shelly() {
   cp -r "${THEME_SRC_DIR}/assets/gnome-shell/assets${color}/"*".svg"                          "${TARGET_DIR}/assets"
   cp -r "${THEME_SRC_DIR}/assets/gnome-shell/activities/activities${icon}.svg"                "${TARGET_DIR}/assets/activities.svg"
   cp -r "${WHITESUR_TMP_DIR}/beggy.png"                                                       "${TARGET_DIR}/assets/background.png"
-  cp -r "${WHITESUR_TMP_DIR}/beggy-blur.png"                                                  "${TARGET_DIR}/assets/background-blur.png"
 
   (
     cd "${TARGET_DIR}"
@@ -357,11 +339,10 @@ remove_packy() {
 ###############################################################################
 
 install_themes() {
-  start_animation
-  process_ids=()
-  install_beggy
-  install_beggy_blur
-  cp -rf "${THEME_SRC_DIR}/sass/_gtk-base"{".scss","-temp.scss"}
+  # "install_theemy" and "install_shelly" require "gtk_base", so multithreading
+  # isn't possible
+
+  start_animation; install_beggy
 
   for opacity in "${opacities[@]}"; do
     for alt in "${alts[@]}"; do
@@ -369,21 +350,14 @@ install_themes() {
         install_xfwmy "${color}"
 
         for color in "${colors[@]}"; do
-          gtk_base "${color}" "${opacity}" "${theme}" "${compact}" &
-          process_ids+=("${!}") &
-          install_theemy "${color}" "${opacity}" "${alt}" "${theme}" "${icon}" &
-          process_ids+=("${!}")
-
-          gtk_base "${color}" "${opacity}" "${theme}" "${compact}" &
-          process_ids+=("${!}") &
-          install_shelly "${color}" "${opacity}" "${alt}" "${theme}" "${icon}" &
-          process_ids+=("${!}")
+          gtk_base "${color}" "${opacity}" "${theme}" "${compact}"
+          install_theemy "${color}" "${opacity}" "${alt}" "${theme}" "${icon}"
+          install_shelly "${color}" "${opacity}" "${alt}" "${theme}" "${icon}"
         done
       done
     done
   done
 
-  wait ${process_ids[*]} &> /dev/null
   stop_animation
 }
 
@@ -409,10 +383,10 @@ install_gdm_theme() {
   local TARGET=
 
   # Let's go!
-  rm -rf "${WHITESUR_GS_DIR}"; install_beggy; install_beggy_blur
+  rm -rf "${WHITESUR_GS_DIR}"; install_beggy
+  gtk_base "${colors[0]}" "${opacities[0]}" "${themes[0]}"
 
   if check_theme_file "${COMMON_CSS_FILE}"; then # CSS-based theme
-    gtk_base "${colors[0]}" "${opacities[0]}" "${themes[0]}" &
     install_shelly "${colors[0]}" "${opacities[0]}" "${alts[0]}" "${themes[0]}" "${icon}" "${WHITESUR_GS_DIR}"
     sed $SED_OPT "s|assets|${WHITESUR_GS_DIR}/assets|" "${WHITESUR_GS_DIR}/gnome-shell.css"
 
@@ -429,11 +403,10 @@ install_gdm_theme() {
     # Fix previously installed WhiteSur
     restore_file "${ETC_CSS_FILE}"
   else # GR-based theme
-    gtk_base "${colors[0]}" "${opacities[0]}" "${themes[0]}" &
     install_shelly "${colors[0]}" "${opacities[0]}" "${alts[0]}" "${themes[0]}" "${icon}" "${WHITESUR_TMP_DIR}/shelly"
     sed $SED_OPT "s|assets|resource:///org/gnome/shell/theme/assets|" "${WHITESUR_TMP_DIR}/shelly/gnome-shell.css"
 
-    if check_theme_file "$POP_OS_GR_F & ILE"; then
+    if check_theme_file "$POP_OS_GR_FILE"; then
       TARGET="${POP_OS_GR_FILE}"
     elif check_theme_file "$YARU_GR_FILE"; then
       TARGET="${YARU_GR_FILE}"
@@ -499,7 +472,8 @@ remove_firefox_theme() {
 ###############################################################################
 
 install_dash_to_dock_theme() {
-  cp -rf "${THEME_SRC_DIR}/sass/_gtk-base"{".scss","-temp.scss"}
+  gtk_base "${colors[0]}" "${opacities[0]}" "${themes[0]}"
+
   if [[ -d "${DASH_TO_DOCK_DIR_HOME}" ]]; then
     backup_file "${DASH_TO_DOCK_DIR_HOME}/stylesheet.css" "userify"
     userify sassc ${SASSC_OPT} "${DASH_TO_DOCK_SRC_DIR}/stylesheet$(destify ${colors[0]}).scss" "${DASH_TO_DOCK_DIR_HOME}/stylesheet.css"
@@ -575,7 +549,6 @@ gtk_base() {
 ###############################################################################
 
 customize_theme() {
-  rm -rf "${THEME_SRC_DIR}/sass/_theme-options-temp.scss"
   cp -rf "${THEME_SRC_DIR}/sass/_theme-options"{".scss","-temp.scss"}
 
   # Change gnome-shell panel transparency
@@ -616,6 +589,7 @@ customize_theme() {
 
   if [[ "${compact}" == 'false' ]]; then
     prompt -s "Changing Definition mode to HD (Bigger font, Bigger size) ..."
+    #FIXME: @vince is it not implemented yet?
   fi
 }
 
diff --git a/src/assets/gnome-shell/common-assets/background-blur-darken.png b/src/assets/gnome-shell/common-assets/background-blur-darken.png
new file mode 100644
index 0000000..266ffed
Binary files /dev/null and b/src/assets/gnome-shell/common-assets/background-blur-darken.png differ
diff --git a/src/assets/gnome-shell/common-assets/background-blur.png b/src/assets/gnome-shell/common-assets/background-blur.png
index f4ae73e..b71b275 100644
Binary files a/src/assets/gnome-shell/common-assets/background-blur.png and b/src/assets/gnome-shell/common-assets/background-blur.png differ
diff --git a/src/assets/gnome-shell/common-assets/background-darken.png b/src/assets/gnome-shell/common-assets/background-darken.png
new file mode 100644
index 0000000..04bf5be
Binary files /dev/null and b/src/assets/gnome-shell/common-assets/background-darken.png differ
diff --git a/src/main/gnome-shell/gnome-shell-theme.gresource.xml b/src/main/gnome-shell/gnome-shell-theme.gresource.xml
index 81b973c..0a6771c 100644
--- a/src/main/gnome-shell/gnome-shell-theme.gresource.xml
+++ b/src/main/gnome-shell/gnome-shell-theme.gresource.xml
@@ -18,7 +18,6 @@
     <file>assets/activities.svg</file>
     <file>assets/view-app-grid.svg</file>
     <file>assets/background.png</file>
-    <file>assets/background-blur.png</file>
     <file>icons/scalable/actions/color-pick.svg</file>
     <file>icons/scalable/status/eye-not-looking-symbolic.svg</file>
     <file>icons/scalable/status/eye-open-negative-filled-symbolic.svg</file>
diff --git a/src/sass/gnome-shell/widgets-40-0/_overview.scss b/src/sass/gnome-shell/widgets-40-0/_overview.scss
index 19a3e9b..6d20457 100644
--- a/src/sass/gnome-shell/widgets-40-0/_overview.scss
+++ b/src/sass/gnome-shell/widgets-40-0/_overview.scss
@@ -4,7 +4,7 @@
 
 #overviewGroup {
   background-color: rgba($osd_bg_color, 1);
-  background-image: url("assets/background-blur.png");
+  background-image: url("assets/background.png");
   background-repeat: no-repeat;
   background-size: cover;
 }
diff --git a/tweaks.sh b/tweaks.sh
index 4ccc89a..5ceff99 100755
--- a/tweaks.sh
+++ b/tweaks.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#! /usr/bin/env bash
 
 # WARNING: Please make this shell not working-directory dependant, for example
 # instead of using 'cd blabla', use 'cd "${REPO_DIR}/blabla"'