Examine source code of eyvProxy

{
  "name": "eyvProxy",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "icon199x196.png"
    },
    "colors": {
      "toolbar": "rgba(112, 71, 71, 1)",
      "frame": "rgba(8, 31, 69, 1)",
      "tab_background_text": "rgba(252, 0, 0, 1)",
      "bookmark_text": "rgba(18, 2, 2, 1)"
    }
  }
}