Examine source code of Streaks3

{
  "theme": {
    "images": {
      "theme_frame": "Streaks3hdfirefox.jpg"
    },
    "colors": {
      "frame": "#0004fa",
      "tab_background_text": "#4fb7e3"
    }
  },
  "version": "2.0",
  "name": "Streaks3",
  "manifest_version": 2
}