Examine source code of ThemeFox

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ThemeFox",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 121, 0, 0.71)",
      "toolbar_text": "rgb(31, 0, 255)",
      "frame": "rgb(0, 3, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(24, 53, 167, 0.8)",
      "toolbar_field_text": "rgb(233, 181, 133)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(202, 135, 60)",
      "popup_text": "rgb(45, 0, 255)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  }
}