Examine source code of spring morning

{
  "theme": {
    "images": {
      "theme_frame": "springmorning.JPG"
    },
    "colors": {
      "frame": "#e8712c",
      "tab_background_text": "#d4ba13"
    }
  },
  "version": "2.0",
  "name": "spring morning",
  "manifest_version": 2,
  "description": "Looking east toward the sunrise in Van Zandt, WA."
}