Examine source code of Ugly .Art.

{
  "theme": {
    "images": {
      "theme_frame": "header.jpg"
    },
    "colors": {
      "frame": "#cfcfcf",
      "tab_background_text": "#262626"
    }
  },
  "version": "2.0",
  "name": "Ugly .Art.",
  "manifest_version": 2,
  "description": "This is so ugly that you don't want to download it :)"
}