Examine source code of Slick

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Slick",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(255, 255, 255, 0.17)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(4, 0, 37)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(255, 255, 255, 0.59)",
      "toolbar_field_text": "rgb(7, 9, 9)",
      "tab_line": "rgba(39, 100, 255, 0)",
      "popup": "rgba(66, 66, 66, 0.41)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(0, 0, 0, 0.25)",
      "button_background_hover": "rgba(211, 211, 211, 0.44)",
      "ntp_background": "rgb(43, 43, 43)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(0, 0, 0)",
      "sidebar_border": "rgb(0, 0, 0)",
      "sidebar_text": "rgb(251, 251, 251)",
      "sidebar": "rgb(43, 43, 43)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(209, 209, 209)",
      "tab_loading": "rgba(39, 100, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c7a490b-4fcb-4475-9e54-b4de5ac57602}"
    }
  }
}