Examine source code of Multi color

{
  "theme": {
    "images": {
      "theme_frame": "Coloresheader.jpg"
    },
    "colors": {
      "frame": "#0ee6ed",
      "tab_background_text": "#ffef08"
    }
  },
  "version": "2.0",
  "name": "Multi color",
  "manifest_version": 2,
  "description": "Just posting my second one ;=) one suggestion combine this theme whith the mozilla firefox theme NASA NIGHT LAUNCH, looks nicer, try it, thank you"
}