Examine source code of Half Life 2 with lambda

{
  "theme": {
    "images": {
      "theme_frame": "lambda.jpg"
    },
    "colors": {
      "frame": "#030303",
      "tab_background_text": "#d19b08"
    }
  },
  "version": "2.0",
  "name": "Half Life 2 with lambda",
  "manifest_version": 2,
  "description": "A great persona for any HL2 or HL fan!"
}