A cool proposal of a variant of the logo that won the international logo contest back in 2003, by K, but brighter. :)
<a href="//commons.wikimedia.org/wiki/User:Trevor_Tuominen" title="User:Trevor Tuominen">Trevor Tuominen</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>