Examine source code of Brown Lines

{
  "theme": {
    "images": {
      "theme_frame": "cuttingBoardPersonaHeader.jpg"
    },
    "colors": {
      "frame": "#737373",
      "tab_background_text": "#f5fcb8"
    }
  },
  "version": "2.0",
  "name": "Brown Lines",
  "manifest_version": 2,
  "description": "An abstract persona that relaxes as well as inspires. What can brown do for you?"
}