Dynamically theme wallpaper, i3 tabs, kitty

colors/everforest.nix

@@ -1,4 +1,7 @@
 {
+  kitty-theme = "Everforest Dark Hard";
+  wallpaper = "306286.jpg";
+
   background = "#1e2326";
   background-alt = "#272e33";
   foreground = "#d3c6aa";

colors/nord.nix

@@ -1,4 +1,7 @@
 {
+  kitty-theme = "Nord";
+  wallpaper = "roxynord.png";
+
   background = "#2e3440";
   background-alt = "#3b4252";
   foreground = "#eceff4";

hosts/home.nix

@@ -3,6 +3,7 @@
 let
   theme = pkgs.nordic;
   themeName = "Nordic";
+  colors = import ../colors;
 in
 {
   imports = [
@@ -17,7 +18,7 @@ in
     ../terminal.nix
   ];
 
-  home.file."./.background-image".source = ../wallpapers/306286.jpg;
+  home.file."./.background-image".source = ../wallpapers/${colors.wallpaper};
 
   programs.home-manager.enable = true;
 

i3.nix

@@ -1,6 +1,7 @@
 { pkgs, lib, ... }:
 
 let
+  colors = import ./colors;
   mod = "Mod4";
 in {
   # Dependencies
@@ -22,25 +23,25 @@ in {
       };
       colors = {
         focused = {
-          border      = "#4c566a";
-          background  = "#4c566a";
-          text        = "#eceff4";
-          indicator   = "#ff00ff";
-          childBorder = "#ff00ff";
+          border      = "${colors.background-alt}";
+          background  = "${colors.background-alt}";
+          text        = "${colors.foreground}";
+          indicator   = "${colors.undefined}";
+          childBorder = "${colors.undefined}";
         };
         focusedInactive = {
-          border      = "#434c5e";
-          background  = "#434c5e";
-          text        = "#e5e9f0";
-          indicator   = "#ff00ff";
-          childBorder = "#ff00ff";
+          border      = "${colors.background-alt}";
+          background  = "${colors.background-alt}";
+          text        = "${colors.foreground}";
+          indicator   = "${colors.undefined}";
+          childBorder = "${colors.undefined}";
         };
         unfocused = {
-          border      = "#2e3440";
-          background  = "#2e3440";
-          text        = "#e5e9f0";
-          indicator   = "#ff00ff";
-          childBorder = "#ff00ff";
+          border      = "${colors.background}";
+          background  = "${colors.background}";
+          text        = "${colors.foreground}";
+          indicator   = "${colors.undefined}";
+          childBorder = "${colors.undefined}";
         };
       };
       startup = [

terminal.nix

@@ -1,10 +1,13 @@
-{ pkgs, ... }:
+{ ... }:
 
+let
+  colors = import ./colors;
+in
 {
   programs.kitty = { 
     enable = true;
     # https://github.com/kovidgoyal/kitty-themes/blob/master/themes.json
-    theme = "Everforest Dark Hard";
+    theme = "${colors.kitty-theme}";
     font = {
       name = "FiraCode Nerd Font Mono";
       size = 12;