Allow setting the color of pins

marker.nix

@@ -27,13 +27,35 @@ let
         default = null;
       };
 
-      style.label = lib.mkOption {
+      style = {
+        label = lib.mkOption {
           type = lib.types.nullOr
             (lib.types.strMatching "[0-9A-Z]");
           default = null;
         };
+
+        color = lib.mkOption {
+          type = colorType;
+          default = "red";
         };
       };
+    };
+  };
+
+  colorType = lib.types.either
+    (lib.types.strMatching "0x[0-9A-F]{3}[0-9A-F]{3}?")
+    (lib.types.enum [
+      "black"
+      "blue"
+      "brown"
+      "gray"
+      "green"
+      "orange"
+      "purple"
+      "red"
+      "white"
+      "yellow"
+    ]);
 in
 {
   options = {
@@ -54,6 +76,10 @@ in
 
       ganondorf.departure =  {
         location = "Argentinia";
+
+        style = {
+          color = "green";
+        };
       };
     };
 
@@ -83,6 +109,7 @@ in
                 lib.optional (marker.style.label != null)
                 "label:${marker.style.label}"
                 ++ [
+                  "color:${marker.style.color}"
                   "$(${config.scripts.geocode}/bin/geocode ${
                     lib.escapeShellArg marker.location
                   })"