Examine source code of Blue Bash

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue Bash",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-029-cc9cab928c1799136d18758709e91ecc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(79, 90, 164)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(12, 42, 234)",
      "tab_background_text": "rgb(203, 216, 233)",
      "toolbar_field": "rgb(10, 36, 241)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(29, 49, 196)",
      "popup": "rgb(31, 34, 61)",
      "popup_text": "rgb(206, 219, 234)",
      "tab_loading": "rgb(29, 49, 196)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0ea85f7-ec91-4a9a-964a-df4abb3a0023}"
    }
  }
}