Examine source code of GrayDim Win7 1920

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Top.png"
    },
    "colors": {
      "frame": "#4a4a4a",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "GrayDim Win7 1920",
  "manifest_version": 2,
  "description": "A simple theme designed for my personal use.\n\nUses are for Windows 7 / 1920px-wide screens."
}