Examine source code of Winter Sun

{
  "theme": {
    "images": {
      "theme_frame": "persona11.jpg"
    },
    "colors": {
      "frame": "#3e455c",
      "tab_background_text": "#e6e5c1"
    }
  },
  "version": "2.0",
  "name": "Winter Sun",
  "manifest_version": 2,
  "description": "Clean and breezy design for the lovers of the fragile simplicity of winter. Beautiful cold colors and snowflake elements."
}