Examine source code of Fogline

{
  "manifest_version": 2,
  "name": "Fogline",
  "version": "1.0",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "fogline-header.png"
      ]
    },
    "colors": {
      "frame": [
        14,
        26,
        32
      ],
      "toolbar": [
        10,
        20,
        26
      ],
      "tab_background_text": [
        236,
        242,
        245
      ],
      "tab_text": [
        236,
        242,
        245
      ],
      "toolbar_text": [
        236,
        242,
        245
      ],
      "bookmark_text": [
        236,
        242,
        245
      ],
      "toolbar_field": [
        40,
        58,
        66
      ],
      "toolbar_field_text": [
        236,
        242,
        245
      ],
      "toolbar_field_border": [
        60,
        86,
        96
      ],
      "toolbar_vertical_separator": [
        30,
        48,
        56
      ],
      "button_background_active": [
        234,
        196,
        132
      ],
      "button_background_hover": [
        214,
        176,
        120
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{278171bd-93cd-4467-bf2f-c02e7411fb12}"
    }
  }
}