Examine source code of Spikes (Transparent)

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Spikes",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(229, 229, 229)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(214, 214, 214)",
      "toolbar_field": "rgba(0, 0, 0, 0.59)",
      "toolbar_field_text": "rgb(229, 229, 229)",
      "tab_line": "rgba(63, 41, 199, 0.77)",
      "popup": "rgba(0, 0, 0, 0.74)",
      "popup_text": "rgb(229, 229, 229)",
      "button_background_active": "rgba(0, 0, 0, 0.75)",
      "button_background_hover": "rgba(0, 162, 28, 0.48)",
      "icons_attention": "rgb(61, 211, 32)",
      "icons": "rgb(229, 229, 229)",
      "popup_border": "rgba(39, 29, 127, 0)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(60, 0, 158)",
      "sidebar_border": "rgba(39, 29, 127, 0)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(39, 29, 127)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(36, 36, 36)",
      "tab_loading": "rgb(34, 49, 221)",
      "tab_selected": "rgba(0, 0, 0, 0.6)",
      "tab_text": "rgb(229, 229, 229)",
      "toolbar_bottom_separator": "rgb(0, 0, 0)",
      "toolbar_field_border_focus": "rgba(0, 0, 0, 0)",
      "toolbar_field_border": "rgba(45, 41, 199, 0.8)",
      "toolbar_field_focus": "rgb(0, 0, 0)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(60, 0, 158)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b82e67b-baab-430d-975e-afb23de36715}"
    }
  }
}