Examine source code of Blue + Brown

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue + Brown",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-038-6c77b9d7dc86f50c6cd82f9c9b1f36f0.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(124, 85, 60)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(88, 172, 189)",
      "tab_background_text": "rgb(255, 235, 249)",
      "toolbar_field": "rgb(247, 253, 251)",
      "toolbar_field_text": "rgb(124, 85, 60)",
      "tab_line": "rgb(228, 208, 237)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(124, 85, 60)",
      "sidebar_border": "rgb(124, 85, 60)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(98, 221, 58)",
      "sidebar_text": "rgb(124, 85, 60)",
      "tab_loading": "rgb(228, 208, 237)"
    }
  }
}