Examine source code of Alternative Red

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Cops High",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-026-829b05416f823e170310e7c826ad1bec.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(31, 47, 47)",
      "toolbar_text": "rgb(77, 175, 126)",
      "frame": "rgb(1, 9, 7)",
      "tab_background_text": "rgb(31, 118, 75)",
      "toolbar_field": "rgb(9, 32, 25)",
      "toolbar_field_text": "rgb(9, 96, 85)",
      "tab_line": "rgb(19, 190, 120)",
      "popup": "rgb(0, 0, 9)",
      "popup_text": "rgb(26, 115, 71)",
      "tab_loading": "rgb(19, 190, 120)"
    }
  }
}