Examine source code of Wednesday Theme

{
  "manifest_version": 2,
  "version": "3",
  "name": "wednesday-0923",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(51, 47, 49, 0.34)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(56, 47, 72)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(68, 68, 70, 0.26)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(75, 48, 130)",
      "popup": "rgb(56, 47, 72)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(50, 17, 119, 0.7)",
      "button_background_hover": "rgba(123, 48, 130, 0.7)",
      "frame_inactive": "rgb(144, 144, 146)",
      "ntp_background": "rgb(132, 131, 134)",
      "popup_border": "rgb(75, 48, 130)",
      "popup_highlight_text": "rgb(85, 72, 72)",
      "popup_highlight": "rgb(143, 143, 143)",
      "sidebar_border": "rgb(75, 48, 130)",
      "sidebar_highlight_text": "rgb(249, 249, 249)",
      "sidebar_highlight": "rgb(78, 24, 119)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(56, 47, 72)",
      "tab_background_separator": "rgba(75, 48, 130, 0.69)",
      "tab_loading": "rgb(183, 165, 200)",
      "tab_selected": "rgba(48, 10, 91, 0.36)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_field_border_focus": "rgb(112, 110, 110)",
      "toolbar_field_border": "rgb(75, 48, 130)",
      "toolbar_field_focus": "rgb(43, 29, 64)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(123, 120, 125)",
      "toolbar_field_separator": "rgb(180, 184, 184)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(198, 198, 180, 0)",
      "toolbar_vertical_separator": "rgb(180, 184, 184)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{590ef7ff-5e52-4eec-8020-dae41586e167}"
    }
  }
}