New Plasma functionality for GTK4 should be working now. By default, Plasma scheme is set to NOT honoring.

imports/import.css

@@ -1 +1 @@
-import_honor_plasma.css
+import_ignore_plasma.css

imports/import_honor_plasma.css

@@ -1,6 +1,6 @@
 /* This imports current selected theme's colors and then overwrites it with Plasma's colors */
 
-@import "plasma_colors.css";
+@import "plasma_colors.css"; /*unfortunately if it does not exist, this theme will be broken!*/
 @import "../theme_colors.css";
 
 

toggle_plasma.sh

@@ -0,0 +1,84 @@
+#! /bin/bash
+
+THEMES_DIR=color_themes
+CSS_LINK_NAME=theme_colors.css
+IMPORTS_DIR=imports
+IMPORT_FILE=import.css
+IMPORT_FILE_HONOR_PLASMA=import_honor_plasma.css
+IMPORT_FILE_IGNORE_PLASMA=import_ignore_plasma.css
+
+PLASMA_ACTIVE=plasma_active
+PLASMA_INACTIVE=plasma_inactive
+
+PLASMA_SOURCE_CSS_FILE=~/.config/gtk-3.0/colors.css
+LINK_TO_PLASMA_SOURCE_FILE=plasma_colors.css
+
+maxParams=1
+
+usage() {
+
+        echo -e "Usage: $(basename "$0") [--current-status] \n" >&2
+        echo -e "Toggles honoring Plasma's color theme on or off. If there is no color theme for GTK generated by Plasma, it won't be toggled on" >&2
+        echo -e "\nOption --current-status tells if the theme is currently honoring Plasma color scheme or not" >&2
+
+}
+
+
+if [ $# -gt $maxParams ]
+then
+    echo -e "\nError: Incorrect usage." >&2
+    usage
+    exit 1
+fi
+
+if [ $# -eq 1 ]
+then
+         if [ $1 = "--current-status" ]
+         then
+         	[ -e $IMPORTS_DIR/PLASMA_ACTIVE ] && echo -e "The theme is honoring Plasma's color scheme\n" || echo -e "\nThe theme is NOT honoring Plasma's color scheme\n"
+         	exit 0
+         else
+             echo -e "\nError: Incorrect usage." >&2
+	    usage
+	    exit 1
+	 fi
+fi
+
+
+# Making sure we are in the script's directory, otherwise it's not going to work
+SCRIPT_PATH=`realpath "$0"`
+SCRIPT_DIR=`dirname "$SCRIPT_PATH"`
+cd $SCRIPT_DIR
+
+
+
+cd $IMPORTS_DIR
+
+#if we are honoring Plasma colors...
+if [ -e $PLASMA_ACTIVE ]
+then
+	# deactivate it
+	[ -h $IMPORT_FILE ] && rm $IMPORT_FILE
+	ln -s $IMPORT_FILE_IGNORE_PLASMA $IMPORT_FILE
+	rm $PLASMA_ACTIVE
+	touch $PLASMA_INACTIVE
+	echo -e "\n Plasma theme honoring toggled OFF (that is: GTK theme will not follow current Plasma color scheme)\n"
+else
+	#before activating Plasma, check if plasma colors.css file exists!
+	if [ ! -e $PLASMA_SOURCE_CSS_FILE ]
+	then
+		echo -e "Could not find Plasma color theme for GTK ($PLASMA_SOURCE_CSS_FILE), so GTK theme will continue not attempting to follow Plasma color scheme. Not doing anything, therefore..."
+		cd cd $SCRIPT_DIR
+		exit 2
+	fi
+	[ -h $IMPORT_FILE ] && rm $IMPORT_FILE
+	ln -s $IMPORT_FILE_HONOR_PLASMA $IMPORT_FILE
+		
+	[ -h $LINK_TO_PLASMA_SOURCE_FILE ] && rm $LINK_TO_PLASMA_SOURCE_FILE
+	ln -s $PLASMA_SOURCE_CSS_FILE $LINK_TO_PLASMA_SOURCE_FILE
+	
+	[ -e $PLASMA_INACTIVE ] && rm $PLASMA_INACTIVE
+	touch $PLASMA_ACTIVE
+	echo -e "\n Plasma theme honoring toggled ON (that is: GTK theme will follow current Plasma color scheme)\n"
+fi 
+cd $SCRIPT_DIR