Examine source code of Discord Theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Discord theme",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-024-8de86d890779309c9a66423c64daa480.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 183, 255)",
      "toolbar_text": "rgb(54, 54, 55)",
      "frame": "rgb(107, 180, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(89, 89, 89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(71, 71, 71)",
      "popup_text": "rgb(255, 255, 255)",
      "frame_inactive": "rgb(255, 255, 255)",
      "icons": "rgb(100, 102, 102)",
      "ntp_background": "rgb(55, 55, 55)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(128, 181, 238)",
      "popup_highlight_text": "rgb(107, 180, 255)",
      "popup_highlight": "rgb(128, 181, 238)",
      "sidebar_highlight_text": "rgb(54, 54, 55)",
      "sidebar_text": "rgb(128, 181, 238)",
      "tab_loading": "rgb(255, 255, 255)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{37c76f72-41a4-410c-b5db-feb7e74e95fc}"
    }
  }
}