Examine source code of Palest Blue Hydrangea

{
  "theme": {
    "images": {
      "theme_frame": "SR-palebluehydra.jpg"
    },
    "colors": {
      "frame": "#8897cf",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Palest Blue Hydrangea",
  "manifest_version": 2,
  "description": "An interesting transition from palest Easter-egg cream to periwinkle blue in some of this year's Hydrangeas in my garden..."
}