Examine source code of Carbon theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#e3d5ba",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Carbon theme",
  "manifest_version": 2,
  "description": "A theme inspired by the SA Carbon keycap set designed by T0mb3ry"
}