Examine source code of Suit

{
  "name": "Suit",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "sui.jpg"
    },
    "colors": {
      "toolbar": "rgba(189, 189, 242, 1)",
      "toolbar_field": "rgba(146, 141, 240, 1)",
      "toolbar_field_text": "rgba(238, 235, 245, 1)",
      "frame": "rgba(163, 189, 240, 1)",
      "tab_background_text": "rgba(250, 250, 255, 1)",
      "bookmark_text": "rgba(255, 250, 250, 1)"
    }
  }
}