Examine source code of Dark Grey AndRo

{
  "theme": {
    "colors": {
      "ntp_background": "#6E6E6E",
      "ntp_text": "#f0f0f0",
      "frame": "#5A5A5A",
      "tab_background_text": "#D2D2D2",
      "tab_background_separator": "#000000",
      "tab_selected": "#646464",
      "tab_text": "#D2D2D2",
      "tab_loading": "#C8C8C8",
      "tab_line": "#E67B00",
      "toolbar": "#646464",
      "toolbar_field": "#5A5A5A",
      "toolbar_field_focus": "#5d5d66",
      "toolbar_field_text": "#D2D2D2",
      "toolbar_field_text_focus": "#D2D2D2",
      "toolbar_field_separator": "#464646",
      "toolbar_field_border": "#464646",
      "toolbar_field_border_focus": "#464646",
      "toolbar_top_separator": "#464646",
      "toolbar_bottom_separator": "#464646",
      "toolbar_vertical_separator": "#464646",
      "bookmark_text": "#D2D2D2",
      "sidebar": "#5A5A5A",
      "sidebar_text": "#D2D2D2",
      "sidebar_border": "#464646",
      "sidebar_highlight": "#505050",
      "sidebar_highlight_text": "#E6E6E6",
      "popup": "#5A5A5A",
      "popup_text": "#D2D2D2",
      "popup_border": "#464646",
      "popup_highlight": "#737373",
      "popup_highlight_text": "#ffc380",
      "icons": "#C8C8C8",
      "icons_attention": "#3CD25E",
      "button_background_hover": "#828282",
      "button_background_active": "#505050"
    }
  },
  "name": "Dark",
  "description": "A dark theme for Firefox",
  "manifest_version": 2,
  "version": "1.0.3"
}