Examine source code of Summertime....

{
  "theme": {
    "images": {
      "theme_frame": "Summertime_header_byLisa.jpg"
    },
    "colors": {
      "frame": "#4b9cf2",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Summertime....",
  "manifest_version": 2,
  "description": "Glass letters spelling S-U-M-M-E-R with a green leaf vine swirling through them while butterflies fly by rejoicing that Summer has arrived! [grass, sun, fun, Summer vacation] \n\nchild friendly persona\n\nPersonas by LisaAtTheBeach"
}