Examine source code of Beach Rocks...

{
  "theme": {
    "images": {
      "theme_frame": "BeachRocks_header_byLisa.jpg"
    },
    "colors": {
      "frame": "#cccccc",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "Beach Rocks...",
  "manifest_version": 2,
  "description": "Rocks and stones found along the seashore are always round and smooth from the constant rolling around in the water and sand. [nature, pebbles] \n\nchild friendly persona\n\nPersonas by LisaAtTheBeach"
}