Examine source code of Classic Sonic Browser Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Classic Sonic Browser Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png",
        "images/1.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top",
        "left bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat",
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.75)",
      "toolbar_text": "rgb(230, 25, 102)",
      "frame": "rgb(0, 153, 255)",
      "tab_background_text": "rgb(230, 25, 102)",
      "toolbar_field": "rgb(255, 204, 179)",
      "toolbar_field_text": "rgb(230, 25, 102)",
      "tab_line": "rgb(0, 0, 0)",
      "popup": "rgb(230, 77, 102)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(255, 255, 255)",
      "button_background_hover": "rgb(255, 204, 179)",
      "frame_inactive": "rgb(255, 255, 255)",
      "icons_attention": "rgb(0, 0, 0)",
      "icons": "rgb(230, 25, 102)",
      "ntp_text": "rgb(0, 0, 0)",
      "popup_border": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(255, 204, 179)",
      "sidebar_border": "rgb(230, 25, 102)",
      "sidebar_highlight_text": "rgb(255, 204, 179)",
      "sidebar_highlight": "rgb(230, 25, 102)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(255, 204, 0)",
      "tab_loading": "rgb(255, 255, 255)",
      "tab_selected": "rgb(230, 77, 102)",
      "tab_text": "rgb(255, 204, 0)",
      "toolbar_bottom_separator": "rgb(230, 25, 102)",
      "toolbar_field_border_focus": "rgb(230, 77, 102)",
      "toolbar_field_border": "rgb(0, 0, 0)",
      "toolbar_field_focus": "rgb(0, 153, 255)",
      "toolbar_field_highlight_text": "rgb(0, 0, 0)",
      "toolbar_field_highlight": "rgb(255, 204, 0)",
      "toolbar_field_text_focus": "rgb(255, 204, 179)",
      "toolbar_top_separator": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e0f6e392-10df-43e5-b771-b0fd3ba8767b}"
    }
  }
}