Examine source code of Hoffnungsschimmer

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Hoffnungsschimmer",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right center"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(45, 38, 38, 0)",
      "toolbar_text": "rgb(255, 174, 118)",
      "frame": "rgb(21, 9, 9)",
      "tab_background_text": "rgb(255, 132, 49)",
      "toolbar_field": "rgb(45, 8, 48)",
      "toolbar_field_text": "rgb(251, 154, 102)",
      "tab_line": "rgb(255, 129, 58)",
      "popup": "rgb(45, 8, 48)",
      "popup_text": "rgb(251, 154, 102)",
      "button_background_active": "rgb(111, 14, 66)",
      "button_background_hover": "rgb(62, 20, 43)",
      "frame_inactive": "rgb(255, 91, 0)",
      "icons_attention": "rgb(252, 103, 0)",
      "icons": "rgb(249, 111, 212)",
      "ntp_background": "rgb(45, 8, 48)",
      "ntp_text": "rgb(251, 154, 102)",
      "popup_border": "rgba(8, 8, 8, 0)",
      "popup_highlight": "rgb(111, 14, 66)",
      "sidebar_border": "rgba(3, 3, 3, 0)",
      "sidebar_text": "rgb(255, 153, 100)",
      "tab_selected": "rgb(66, 10, 49)",
      "toolbar_field_border_focus": "rgb(103, 29, 131)",
      "toolbar_field_border": "rgb(125, 54, 11)",
      "toolbar_field_highlight_text": "rgba(153, 83, 35, 0)",
      "toolbar_field_separator": "rgba(252, 103, 0, 0)",
      "toolbar_top_separator": "rgba(252, 103, 0, 0)",
      "tab_loading": "rgb(255, 129, 58)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{41834201-8a10-4f43-bbaf-5526772f2ef8}"
    }
  }
}