Examine source code of tactransman

{
  "theme": {
    "images": {
      "theme_frame": "ChallengerPersona1600x12001600x1200.jpg"
    },
    "colors": {
      "frame": "#121111",
      "tab_background_text": "#3d2e2e"
    }
  },
  "version": "2.0",
  "name": "tactransman",
  "manifest_version": 2,
  "description": "'09 Challenger Burnout"
}