Examine source code of BlueGreen-v1

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "BlueGreen",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-002-609370e89a219e0548ac5ef6b4a7dd2e.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(21, 82, 52)",
      "toolbar_text": "rgb(177, 252, 236)",
      "frame": "rgb(1, 51, 28)",
      "tab_background_text": "rgb(142, 228, 248)",
      "toolbar_field": "rgb(242, 254, 251)",
      "toolbar_field_text": "rgb(24, 51, 47)",
      "tab_line": "rgb(69, 214, 248)",
      "popup": "rgb(1, 61, 22)",
      "popup_text": "rgb(211, 244, 248)",
      "tab_loading": "rgb(69, 214, 248)"
    }
  }
}