Examine source code of anch theme

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "anch theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(252, 237, 162)",
      "toolbar_text": "rgb(131, 114, 86)",
      "frame": "rgb(255, 248, 229)",
      "tab_background_text": "rgb(131, 114, 86)",
      "toolbar_field": "rgb(255, 206, 11)",
      "toolbar_field_text": "rgb(75, 67, 58)",
      "tab_line": "rgb(237, 229, 193)",
      "popup": "rgb(237, 229, 193)",
      "popup_text": "rgb(131, 114, 86)",
      "button_background_active": "rgb(255, 206, 11)",
      "button_background_hover": "rgb(255, 206, 11)",
      "frame_inactive": "rgb(237, 229, 193)",
      "icons_attention": "rgb(92, 226, 222)",
      "icons": "rgb(131, 114, 86)",
      "ntp_background": "rgb(255, 248, 229)",
      "ntp_text": "rgb(131, 114, 86)",
      "popup_border": "rgb(237, 229, 193)",
      "popup_highlight_text": "rgb(92, 226, 222)",
      "popup_highlight": "rgb(255, 206, 11)",
      "sidebar_highlight_text": "rgb(92, 226, 222)",
      "tab_selected": "rgb(237, 229, 193)",
      "tab_text": "rgb(92, 226, 222)",
      "tab_loading": "rgb(237, 229, 193)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4b951c8c-cdac-4641-90e5-24e797de55c1}"
    }
  }
}