Examine source code of TSR.2 simple

{
  "theme": {
    "images": {
      "theme_frame": "TSR2_simple_header.jpg"
    },
    "colors": {
      "frame": "#979aa6",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "TSR.2 simple",
  "manifest_version": 2,
  "description": "TSR.2"
}