[gnome] add gradience preset, remove obsolete files

overlays/gnome/etc/skel/.config/dconf/user.txt

 [org/gnome/desktop/screensaver]
 picture-uri='file:///usr/share/wallpapers/manjaro-arm/generic/manjaro-arm.png'
 
+[com/github/GradienceTeam/Gradience]
+favourite=['Matcha Dark Sea']
+
 [org/gnome/desktop/interface]
 color-scheme='prefer-dark'
 enable-animations=false

overlays/gnome/etc/skel/.config/gtk-3.0/gtk.css

@@ -15,20 +15,20 @@
 @define-color error_fg_color #eeeeee;
 @define-color window_bg_color #141a1b;
 @define-color window_fg_color #eeeeee;
+@define-color view_bg_color #222b2e;
 @define-color view_fg_color #eeeeee;
-@define-color view_bg_color rgb(34,43,46);
 @define-color headerbar_bg_color #141a1b;
 @define-color headerbar_fg_color #eeeeee;
 @define-color headerbar_border_color #ffffff;
 @define-color headerbar_backdrop_color @window_bg_color;
 @define-color headerbar_shade_color rgba(0, 0, 0, 0.36);
+@define-color card_bg_color #2f3a3e;
 @define-color card_fg_color #eeeeee;
-@define-color card_bg_color rgb(47,58,62);
 @define-color card_shade_color rgba(0, 0, 0, 0.36);
+@define-color dialog_bg_color #222b2e;
 @define-color dialog_fg_color #eeeeee;
+@define-color popover_bg_color #222b2e;
 @define-color popover_fg_color #eeeeee;
-@define-color dialog_bg_color rgb(34,43,46);
-@define-color popover_bg_color rgb(34,43,46);
 @define-color shade_color #141a1b;
 @define-color scrollbar_outline_color rgba(0, 0, 0, 0.5);
 @define-color blue_1 #99c1f1;

overlays/gnome/etc/skel/.config/gtk-4.0/gtk.css

@@ -15,20 +15,20 @@
 @define-color error_fg_color #eeeeee;
 @define-color window_bg_color #141a1b;
 @define-color window_fg_color #eeeeee;
+@define-color view_bg_color #222b2e;
 @define-color view_fg_color #eeeeee;
-@define-color view_bg_color rgb(34,43,46);
 @define-color headerbar_bg_color #141a1b;
 @define-color headerbar_fg_color #eeeeee;
 @define-color headerbar_border_color #ffffff;
 @define-color headerbar_backdrop_color @window_bg_color;
 @define-color headerbar_shade_color rgba(0, 0, 0, 0.36);
+@define-color card_bg_color #2f3a3e;
 @define-color card_fg_color #eeeeee;
-@define-color card_bg_color rgb(47,58,62);
 @define-color card_shade_color rgba(0, 0, 0, 0.36);
+@define-color dialog_bg_color #222b2e;
 @define-color dialog_fg_color #eeeeee;
+@define-color popover_bg_color #222b2e;
 @define-color popover_fg_color #eeeeee;
-@define-color dialog_bg_color rgb(34,43,46);
-@define-color popover_bg_color rgb(34,43,46);
 @define-color shade_color #141a1b;
 @define-color scrollbar_outline_color rgba(0, 0, 0, 0.5);
 @define-color blue_1 #99c1f1;

overlays/gnome/etc/skel/.config/presets/user/matcha-dark-sea.json

+{
+    "name": "Matcha Dark Sea",
+    "variables": {
+        "accent_color": "#16a085",
+        "accent_bg_color": "#16a085",
+        "accent_fg_color": "#eeeeee",
+        "destructive_color": "#Cd3f45",
+        "destructive_bg_color": "#Cd3f45",
+        "destructive_fg_color": "#eeeeee",
+        "success_color": "#9fca56",
+        "success_bg_color": "#141a1b",
+        "success_fg_color": "#eeeeee",
+        "warning_color": "#e6cd69",
+        "warning_bg_color": "#141a1b",
+        "warning_fg_color": "#eeeeee",
+        "error_color": "#Cd3f45",
+        "error_bg_color": "#141a1b",
+        "error_fg_color": "#eeeeee",
+        "window_bg_color": "#141a1b",
+        "window_fg_color": "#eeeeee",
+        "view_bg_color": "#222b2e",
+        "view_fg_color": "#eeeeee",
+        "headerbar_bg_color": "#141a1b",
+        "headerbar_fg_color": "#eeeeee",
+        "headerbar_border_color": "#ffffff",
+        "headerbar_backdrop_color": "@window_bg_color",
+        "headerbar_shade_color": "rgba(0, 0, 0, 0.36)",
+        "card_bg_color": "#2f3a3e",
+        "card_fg_color": "#eeeeee",
+        "card_shade_color": "rgba(0, 0, 0, 0.36)",
+        "dialog_bg_color": "#222b2e",
+        "dialog_fg_color": "#eeeeee",
+        "popover_bg_color": "#222b2e",
+        "popover_fg_color": "#eeeeee",
+        "shade_color": "#141a1b",
+        "scrollbar_outline_color": "rgba(0, 0, 0, 0.5)"
+    },
+    "palette": {
+        "blue_": {
+            "1": "#99c1f1",
+            "2": "#62a0ea",
+            "3": "#3584e4",
+            "4": "#1c71d8",
+            "5": "#1a5fb4"
+        },
+        "green_": {
+            "1": "#8ff0a4",
+            "2": "#57e389",
+            "3": "#33d17a",
+            "4": "#2ec27e",
+            "5": "#26a269"
+        },
+        "yellow_": {
+            "1": "#f9f06b",
+            "2": "#f8e45c",
+            "3": "#f6d32d",
+            "4": "#f5c211",
+            "5": "#e5a50a"
+        },
+        "orange_": {
+            "1": "#ffbe6f",
+            "2": "#ffa348",
+            "3": "#ff7800",
+            "4": "#e66100",
+            "5": "#c64600"
+        },
+        "red_": {
+            "1": "#f66151",
+            "2": "#ed333b",
+            "3": "#e01b24",
+            "4": "#c01c28",
+            "5": "#a51d2d"
+        },
+        "purple_": {
+            "1": "#dc8add",
+            "2": "#c061cb",
+            "3": "#9141ac",
+            "4": "#813d9c",
+            "5": "#613583"
+        },
+        "brown_": {
+            "1": "#cdab8f",
+            "2": "#b5835a",
+            "3": "#986a44",
+            "4": "#865e3c",
+            "5": "#63452c"
+        },
+        "light_": {
+            "1": "#ffffff",
+            "2": "#f6f5f4",
+            "3": "#deddda",
+            "4": "#c0bfbc",
+            "5": "#9a9996"
+        },
+        "dark_": {
+            "1": "#77767b",
+            "2": "#5e5c64",
+            "3": "#3d3846",
+            "4": "#241f31",
+            "5": "#000000"
+        }
+    },
+    "custom_css": {
+        "gtk4": "",
+        "gtk3": ""
+    }
+}
\ No newline at end of file