Examine source code of Snowphie's Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Snowphie's Theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(9, 12, 16)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(13, 17, 23)",
      "tab_background_text": "rgb(215, 226, 239)",
      "toolbar_field": "rgb(15, 15, 30)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(116, 116, 180)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(215, 226, 239)",
      "button_background_hover": "rgb(93, 95, 153)",
      "icons": "rgb(148, 138, 202)",
      "popup_border": "rgb(93, 95, 153)",
      "tab_loading": "rgb(116, 116, 180)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{578a5545-a38d-4544-88c9-a0cd1353b84f}"
    }
  }
}