Examine source code of PCMR Theme

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#242424",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "PCMR Theme",
  "manifest_version": 2,
  "description": "I saw the Chrome PCMR Theme, and wanted to do one of my own."
}