diff --git a/copy_static_files.js b/copy_static_files.js
new file mode 100644
index 0000000..6763909
--- /dev/null
+++ b/copy_static_files.js
@@ -0,0 +1,18 @@
+let fs = require('fs');
+let mkdirp = require('mkdirp');
+let getDirName = require('path').dirname;
+
+let copy = [
+    { from: './src/css/worldmap.dark.css', to: './dist/css/worldmap.dark.css' },
+    { from: './src/css/worldmap.light.css', to: './dist/css/worldmap.light.css' },
+];
+
+copy.forEach(path => {
+    let dir = getDirName(path.to);
+    if (!fs.existsSync(dir)) {
+        mkdirp(dir, function (err) {
+            if (err) return cb(err);
+        });
+    }
+    fs.createReadStream(path.from).pipe(fs.createWriteStream(path.to));
+});
diff --git a/package.json b/package.json
index 8e038f5..6379991 100644
--- a/package.json
+++ b/package.json
@@ -2,12 +2,12 @@
   "name": "worldmap-panel",
   "version": "1.0.1",
   "description": "Worldmap Panel Plugin for Grafana",
-  "main": "src/module.js",
+  "main": "src/module.ts",
   "scripts": {
-    "build": "grafana-toolkit plugin:build",
-    "test": "grafana-toolkit plugin:test",
-    "dev": "grafana-toolkit plugin:dev",
-    "watch": "grafana-toolkit plugin:dev --watch"
+    "build": "node ./copy_static_files.js && grafana-toolkit plugin:build",
+    "test": "node ./copy_static_files.js && grafana-toolkit plugin:test",
+    "dev": "node ./copy_static_files.js && grafana-toolkit plugin:dev",
+    "watch": "node ./copy_static_files.js && grafana-toolkit plugin:dev --watch"
   },
   "keywords": [
     "worldmap",
diff --git a/src/css/worldmap.dark.css b/src/css/worldmap.dark.css
index ce009f1..9528a56 100644
--- a/src/css/worldmap.dark.css
+++ b/src/css/worldmap.dark.css
@@ -1,8 +1,3 @@
-.map-darken img.leaflet-tile {
-  /* -webkit-filter: brightness(1.6) grayscale(1) contrast(1);
-  filter: brightness(1.6) grayscale(1) contrast(1); */
-}
-
 .worldmap-popup .leaflet-popup-content-wrapper, .worldmap-popup .leaflet-popup-tip {
   background-color: #333;
 }