 Getting back to stars, here's Pollux, a bright orange star. In 2006 it was confirmed to have an orbiting planet. Arcturus is an even brighter orange star. In fact, it is the fourth most luminous star in the sun's neighborhood. Capella has a rich yellow color and is the third brightest star in the northern hemisphere after Arcturus and Vega. Closer examination finds that Capella is actually four stars organized as two binary systems. Castor is actually three sets of binary systems with some bright yellow and some dim red stars.