zathura: add transparency to highlight colors

modules/zathura/hm.nix

@@ -1,34 +1,38 @@
 { config, lib, ... }:
 
-with config.lib.stylix.colors;
 {
   options.stylix.targets.zathura.enable =
     config.lib.stylix.mkEnableTarget "Zathura" true;
 
   config = lib.mkIf config.stylix.targets.zathura.enable {
-    # Taken from here:
-    #   https://github.com/doenerkebap/base16-zathura
-    programs.zathura.options = {
-      default-bg = "#${base00}";
-      default-fg = "#${base01}";
-      statusbar-fg = "#${base04}";
-      statusbar-bg = "#${base02}";
-      inputbar-bg = "#${base00}";
-      inputbar-fg = "#${base07}";
-      notification-bg = "#${base00}";
-      notification-fg = "#${base07}";
-      notification-error-bg = "#${base00}";
-      notification-error-fg = "#${base08}";
-      notification-warning-bg = "#${base00}";
-      notification-warning-fg = "#${base08}";
-      highlight-color = "#${base0A}";
-      highlight-active-color = "#${base0D}";
-      completion-bg = "#${base01}";
-      completion-fg = "#${base0D}";
-      completion-highlight-fg = "#${base07}";
-      completion-highlight-bg = "#${base0D}";
-      recolor-lightcolor = "#${base00}";
-      recolor-darkcolor = "#${base06}";
+    programs.zathura.options = let
+      highlightTransparency = "0.5";
+      getColorCh = colorName: channel: config.lib.stylix.colors."${colorName}-rgb-${channel}";
+      rgb = color: ''rgb(${getColorCh color "r"}, ${getColorCh color "g"}, ${getColorCh color "b"})'';
+      rgba = color: ''rgba(${getColorCh color "r"}, ${getColorCh color "g"}, ${getColorCh color "b"}, ${highlightTransparency})'';
+    in {
+      # Taken from here:
+      #   https://github.com/doenerkebap/base16-zathura
+      default-bg = rgb "base00";
+      default-fg = rgb "base01";
+      statusbar-fg = rgb "base04";
+      statusbar-bg = rgb "base02";
+      inputbar-bg = rgb "base00";
+      inputbar-fg = rgb "base07";
+      notification-bg = rgb "base00";
+      notification-fg = rgb "base07";
+      notification-error-bg = rgb "base00";
+      notification-error-fg = rgb "base08";
+      notification-warning-bg = rgb "base00";
+      notification-warning-fg = rgb "base08";
+      highlight-color = rgba "base0A";
+      highlight-active-color = rgba "base0D";
+      completion-bg = rgb "base01";
+      completion-fg = rgb "base0D";
+      completion-highlight-fg = rgb "base07";
+      completion-highlight-bg = rgb "base0D";
+      recolor-lightcolor = rgb "base00";
+      recolor-darkcolor = rgb "base06";
     };
   };
 }