Examine source code of MIX - RGYB

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Mix - RYBG",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(237, 240, 241)",
      "toolbar_field": "rgb(251, 251, 188)",
      "toolbar_field_text": "rgb(62, 87, 184)",
      "tab_line": "rgb(15, 52, 12)",
      "popup": "rgb(240, 243, 244)",
      "popup_text": "rgb(184, 23, 14)",
      "tab_loading": "rgb(15, 52, 12)",
      "bookmark_text": "rgb(7, 118, 3)",
      "frame": "rgb(30, 58, 89)",
      "tab_background_text": "rgb(240, 184, 2)"
    }
  }
}