Examine source code of solstice_

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#99FFFF"
    }
  },
  "version": "2.0",
  "name": "solstice_",
  "manifest_version": 2,
  "description": "Copyright wallpaper image base by <b>soulstitches</b> on deviantART link: \n<a rel=\"nofollow\" href=\"https://outgoing.prod.mozaws.net/v1/c4a5005d664053127b3a5cd15b7aab3888e05ed5954e658383d64a50418bc89b/http%3A//soulstitches.deviantart.com/art/The-Shadow-s-Muse-68388777\">http://soulstitches.deviantart.com/art/The-Shadow-s-Muse-68388777</a> \n\n❤ Theme Designed by <b>candelora ©</b> ❤"
}