The design (pictured) appears next to the interactive search box
when users type in the words 'gay' or 'lesbian'.
Google Operating System said in a blog post: "It's not the first
June when Google changes the search results interface when you
search for [gay] and other related terms.
"While in 2009 and 2010 Google added a colorful bar below the
search box, this year there's a rainbow next to the search
box."
Previously, Google have been vocal about supporting the repeal of
Proposition 8 and recently produced a video in support of the It
Gets Better campaign.