refactor rice into config

common/rice/default.nix

@@ -0,0 +1,55 @@
+{
+  lib,
+  inputs,
+  ...
+}:
+let
+  nix-rice = import "${inputs.nix-rice}/lib.nix" {
+    inherit lib;
+    kitty-themes-src = { };
+  };
+  inherit (nix-rice) kitty-themes;
+  inherit (nix-rice.palette) toRGBShortHex toRGBHex;
+  theme = kitty-themes.parseTheme ./pal.conf;
+in
+{
+  options.rice = lib.mkOption {
+    description = "ricing related variables";
+    default = { };
+    type = lib.types.attrsOf lib.types.anything;
+  };
+  config.rice = rec {
+    palette = theme // {
+      normal = {
+        black = theme.color0;
+        red = theme.color1;
+        green = theme.color2;
+        yellow = theme.color3;
+        blue = theme.color4;
+        magenta = theme.color5;
+        cyan = theme.color6;
+        white = theme.color7;
+      };
+      bright = {
+        black = theme.color8;
+        red = theme.color9;
+        green = theme.color10;
+        yellow = theme.color11;
+        blue = theme.color12;
+        magenta = theme.color13;
+        cyan = theme.color14;
+        white = theme.color15;
+      };
+      util = {
+        fg = theme.foreground;
+        bg = theme.background;
+        fg_sel = theme.selection_foreground;
+        bg_sel = theme.selection_background;
+        inherit (theme) cursor;
+        # url = theme.url_color;
+      };
+      hex = toRGBHex palette;
+      shortHex = toRGBShortHex palette;
+    };
+  };
+}