Examine source code of Pastellar

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Pastellar",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(6, 20, 48, 0.58)",
      "toolbar_text": "rgb(228, 251, 255)",
      "frame": "rgb(2, 19, 23)",
      "tab_background_text": "rgb(196, 217, 237)",
      "toolbar_field": "rgba(37, 51, 113, 0.75)",
      "toolbar_field_text": "rgb(240, 251, 255)",
      "tab_line": "rgba(0, 255, 159, 0.85)",
      "popup": "rgba(36, 38, 79, 0.98)",
      "popup_text": "rgb(196, 239, 255)",
      "button_background_active": "rgba(225, 16, 255, 0.64)",
      "button_background_hover": "rgba(148, 34, 234, 0.6)",
      "frame_inactive": "rgba(2, 19, 23, 0.9)",
      "icons_attention": "rgb(122, 255, 202)",
      "icons": "rgb(250, 201, 255)",
      "ntp_background": "rgb(10, 10, 29)",
      "ntp_text": "rgb(196, 217, 237)",
      "popup_border": "rgba(181, 42, 255, 0.5)",
      "popup_highlight_text": "rgb(0, 4, 73)",
      "popup_highlight": "rgba(173, 183, 208, 0.45)",
      "sidebar_border": "rgba(136, 18, 255, 0.7)",
      "sidebar_highlight_text": "rgb(0, 4, 73)",
      "sidebar_highlight": "rgba(139, 174, 221, 0.8)",
      "sidebar_text": "rgb(200, 237, 255)",
      "sidebar": "rgb(24, 26, 55)",
      "tab_background_separator": "rgba(136, 18, 255, 0.7)",
      "tab_loading": "rgba(223, 12, 255, 0.8)",
      "tab_selected": "rgba(23, 125, 149, 0.7)",
      "tab_text": "rgb(228, 251, 255)",
      "toolbar_bottom_separator": "rgba(72, 162, 255, 0.6)",
      "toolbar_field_border_focus": "rgba(233, 75, 255, 0.8)",
      "toolbar_field_border": "rgba(213, 95, 255, 0.75)",
      "toolbar_field_focus": "rgba(33, 35, 68, 0.98)",
      "toolbar_field_highlight_text": "rgb(0, 5, 28)",
      "toolbar_field_highlight": "rgba(89, 228, 255, 0.7)",
      "toolbar_field_separator": "rgba(136, 18, 255, 0.7)",
      "toolbar_field_text_focus": "rgb(187, 251, 255)",
      "toolbar_top_separator": "rgba(96, 199, 255, 0.15)",
      "toolbar_vertical_separator": "rgba(126, 45, 255, 0.5)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e040e6d0-e282-4054-8fa4-698259264a01}"
    }
  }
}