Examine source code of Watercolour Plants

{
  "theme": {
    "images": {
      "theme_frame": "WaterColourPlantsheader.jpg"
    },
    "colors": {
      "frame": "#e864ad",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Watercolour Plants",
  "manifest_version": 2,
  "description": "A smooth, subtle watercolour persona, with pale pinks, dull oranges and soft blues."
}