Common misconceptions about stars and light:
http://amazing-space.stsci.edu/eds/tools/type/myths.php.p=Teaching+tools%40%2Ceds%2Ctools%2C

Stars – Common Misconceptions
http://www.bellaonline.com/articles/art28587.asp

The Bad Astronomy website provides student misconceptions in astronomy as well as background information on stars and the light stars emit.
http://www.badastronomy.com/bad/misc/starcolors.html