Examine source code of regency colours

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "regency colours",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-010-e9f94a3e61666a4c7677eb9cce17d854.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(170, 226, 160)",
      "toolbar_text": "rgb(98, 73, 56)",
      "frame": "rgb(168, 160, 226)",
      "tab_background_text": "rgb(255, 253, 251)",
      "toolbar_field": "rgb(252, 255, 205)",
      "toolbar_field_text": "rgb(0, 0, 0)",
      "tab_line": "rgb(251, 250, 255)",
      "popup": "rgb(254, 252, 211)",
      "popup_text": "rgb(98, 102, 183)",
      "frame_inactive": "rgb(255, 216, 188)",
      "icons_attention": "rgb(255, 75, 30)",
      "icons": "rgb(248, 112, 140)",
      "ntp_background": "rgb(168, 160, 226)",
      "ntp_text": "rgb(251, 250, 255)",
      "sidebar_border": "rgb(248, 112, 140)",
      "sidebar": "rgb(255, 96, 0)",
      "tab_loading": "rgb(255, 107, 0)",
      "tab_text": "rgb(98, 73, 56)",
      "toolbar_field_border": "rgb(255, 136, 0)",
      "toolbar_vertical_separator": "rgb(39, 255, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f62cf7b4-128a-43b0-aea1-e896b8eec64c}"
    }
  }
}