Examine source code of BF3 engineer class

{
  "theme": {
    "images": {
      "theme_frame": "ph.bf3_engineerclass.png"
    },
    "colors": {
      "frame": "#18074f",
      "tab_background_text": "#fafafa"
    }
  },
  "version": "2.0",
  "name": "BF3 engineer class",
  "manifest_version": 2,
  "description": "battlefield 3 engineer class"
}