Question: what do the different buzzfeed channel colors mean

title: BuzzFeed
text: While working at the Huffington Post , Peretti started BuzzFeed ( originally called BuzzFeed Laboratories ) as a side project , in 2006 , in partnership with his former supervisor John Johnson . In the beginning , BuzzFeed employed no writers or editors , just an `` algorithm to cull stories from around the web that were showing stirrings of virality . '' The site initially launched an instant messaging client , BuzzBot , which messaged users a link to popular content . The messages were sent based on algorithms which examined the links that were being quickly disseminated , scouring through the feeds of hundreds of blogs that were aggregating them . Later , the site began spotlighting the most popular links that BuzzBot found . Peretti hired curators to help describe the content that was popular around the web . In 2011 , Peretti hired Politico 's Ben Smith , who earlier had achieved much attention as a political blogger , to assemble a news operation in addition to the many aggregated `` listicles '' .