Examine source code of Red Flower...

{
  "theme": {
    "images": {
      "theme_frame": "lilluleval.png"
    },
    "colors": {
      "frame": "#c92c2c",
      "tab_background_text": "#080707"
    }
  },
  "version": "2.0",
  "name": "Red Flower...",
  "manifest_version": 2,
  "description": "ö.ö"
}