Examine source code of Gideon Dark

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gideon Dark",
  "description": "A dark theme with colorful accents.",
  "author": "Gideon Azeria",
  "theme": {
    "images": {
      "theme_frame": "gideon_bg_dark.png"
    },
    "colors": {
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "button_background_active": "rgba(1, 46, 231, 1)",
      "button_background_hover": "rgba(1, 46, 231, 1)",
      "frame": "rgba(0, 0, 0, 1)",
      "frame_inactive": "rgba(251, 127, 0, 1)",
      "icons": "rgba(0, 150, 45, 1)",
      "icons_attention": "rgba(251, 127, 0, 1)",
      "ntp_background": "rgba(0, 0, 0, 1)",
      "ntp_text": "rgba(255, 255, 255, 1)",
      "popup": "rgba(0, 0, 0, 1)",
      "popup_border": "rgba(0, 150, 45, 1)",
      "popup_highlight": "rgba(1, 46, 231, 1)",
      "popup_highlight_text": "rgba(0, 0, 0, 1)",
      "popup_text": "rgba(255, 255, 255, 1)",
      "sidebar": "rgba(0, 0, 0, 1)",
      "sidebar_border": "rgba(0, 150, 45, 1)",
      "sidebar_highlight": "rgba(1, 46, 231, 1)",
      "sidebar_highlight_text": "rgba(0, 0, 0, 1)",
      "sidebar_text": "rgba(255, 255, 255, 1)",
      "tab_background_separator": "rgba(0, 150, 45, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(1, 46, 231, 1)",
      "tab_loading": "rgba(1, 46, 231, 1)",
      "tab_selected": "rgba(0, 0, 0, 1)",
      "tab_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_bottom_separator": "rgba(0, 150, 45, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_border": "rgba(0, 150, 45, 1)",
      "toolbar_field_border_focus": "rgba(1, 46, 231, 1)",
      "toolbar_field_focus": "rgba(0, 0, 0, 0)",
      "toolbar_field_highlight": "rgba(1, 46, 231, 1)",
      "toolbar_field_highlight_text": "rgba(0, 0, 0, 1)",
      "toolbar_field_separator": "rgba(0, 150, 45, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "toolbar_field_text_focus": "rgba(255, 255, 255, 1)",
      "toolbar_top_separator": "rgba(0, 150, 45, 1)",
      "toolbar_vertical_separator": "rgba(0, 150, 45, 1)"
    }
  }
}