Examine source code of CloudsBlackText

{
  "theme": {
    "images": {
      "theme_frame": "WisconsinClouds.jpg"
    },
    "colors": {
      "frame": "#cdd1d1",
      "tab_background_text": "#0d0101"
    }
  },
  "version": "2.0",
  "name": "CloudsBlackText",
  "manifest_version": 2,
  "description": "light blue sky, clouds, black text"
}