Examine source code of kresstein

{
  "name": "kresstein ",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "kres Theme.png"
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "tab_background_text": "rgba(20, 59, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(20, 59, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(20, 59, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{21d257b4-3a22-4cc1-a68b-30898801f725}"
    }
  }
}