Examine source code of Simple Flowers...

{
  "theme": {
    "images": {
      "theme_frame": "SimpleFlowers_header_byLisa.jpg"
    },
    "colors": {
      "frame": "#b5afaf",
      "tab_background_text": "#cccccc"
    }
  },
  "version": "2.0",
  "name": "Simple Flowers...",
  "manifest_version": 2,
  "description": "background design, orange blue and yellow flowers on a light gray background, floral, blossoms\n\nchild friendly persona\n\nPersonas by LisaAtTheBeach"
}