Examine source code of Steveshort

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Steve",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left center"
      ],
      "additional_backgrounds_tiling": [
        "repeat-x"
      ]
    },
    "colors": {
      "toolbar": "rgb(67, 220, 152)",
      "toolbar_text": "rgb(201, 77, 2)",
      "frame": "rgb(177, 159, 192)",
      "tab_background_text": "rgb(141, 16, 79)",
      "toolbar_field": "rgb(67, 44, 26)",
      "toolbar_field_text": "rgb(89, 183, 126)",
      "tab_line": "rgb(247, 24, 251)",
      "popup": "rgb(48, 133, 223)",
      "popup_text": "rgb(180, 199, 11)",
      "tab_loading": "rgb(247, 24, 251)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b58802ef-f3fd-458c-8ee4-fd54ac7f1a4f}"
    }
  }
}