Examine source code of SilverAgeBM

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "SilverAgeBM",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-033-cf10aca0d9374ba108ef8e68a5f5e931.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(147, 133, 160, 0.99)",
      "toolbar_text": "rgb(0, 2, 10)",
      "frame": "rgb(24, 50, 233)",
      "tab_background_text": "rgb(235, 188, 8)",
      "toolbar_field": "rgb(0, 2, 10)",
      "toolbar_field_text": "rgb(235, 188, 8)",
      "tab_line": "rgb(235, 188, 8)",
      "popup": "rgb(0, 2, 10)",
      "popup_text": "rgb(35, 58, 225)",
      "tab_loading": "rgb(235, 188, 8)"
    }
  }
}