Examine source code of Cubes-light

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cube",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-039-717a66ba4d455686088c80f391cb3264.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(6, 37, 96, 0)",
      "toolbar_text": "rgb(144, 177, 238)",
      "frame": "rgb(46, 61, 97)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(11, 58, 147, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 0.96)",
      "tab_line": "rgb(59, 255, 91)",
      "popup": "rgb(46, 61, 97)",
      "popup_text": "rgb(144, 177, 238)",
      "icons": "rgb(144, 177, 238)",
      "tab_loading": "rgb(59, 255, 91)"
    }
  }
}