Examine source code of Wilderness Blue

{
  "theme": {
    "images": {
      "theme_frame": "135-3509topB_IMG.jpg"
    },
    "colors": {
      "frame": "#3b74bf",
      "tab_background_text": "#111636"
    }
  },
  "version": "2.0",
  "name": "Wilderness Blue",
  "manifest_version": 2,
  "description": "View from Wilderness Ranch horse camp toward Los Pinos and Santiago Peaks in the Cleveland National Forest"
}