Examine source code of Two colors #3

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Two colors #3",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-024-8de86d890779309c9a66423c64daa480.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(74, 28, 37)",
      "toolbar_text": "rgb(27, 178, 183)",
      "frame": "rgb(54, 45, 52)",
      "tab_background_text": "rgb(10, 209, 216)",
      "toolbar_field": "rgb(54, 45, 52)",
      "toolbar_field_text": "rgb(10, 209, 216)",
      "tab_line": "rgb(44, 145, 59)",
      "popup": "rgb(74, 28, 37)",
      "popup_text": "rgb(82, 216, 220)",
      "tab_loading": "rgb(44, 145, 59)"
    }
  }
}