Examine source code of Colour splashes

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Colour splashes",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(128, 128, 128, 0.5)",
      "toolbar_text": "rgb(62, 62, 62)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(193, 193, 193, 0.75)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(255, 0, 143)",
      "popup": "rgb(224, 224, 224)",
      "popup_text": "rgb(119, 0, 255)",
      "popup_border": "rgb(0, 255, 236)",
      "toolbar_bottom_separator": "rgb(255, 174, 0)",
      "toolbar_field_border": "rgb(255, 0, 0)",
      "toolbar_top_separator": "rgb(5, 255, 0)",
      "tab_loading": "rgb(255, 0, 143)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{946e2e91-a54f-45cd-8c94-3c911317cf9c}"
    }
  }
}