Examine source code of Night Blossoms

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#00479e",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Night Blossoms",
  "manifest_version": 2,
  "description": "Wonderful white cherry blossoms set against a serene night sky."
}