How do you earn them (or lose them)? I've seen different colors of stars as well. What does this mean?
Colored stars come in 4 categories: Administrator, Global Mod, Moderator, and Site Supporter (i.e. acknowledged donor, vs anonymous donor).
"O Cross of Christ, all-holy, thrice-blessed, and life-giving, instrument of the mystical rites of Zion, the holy Altar for the service of our Great Archpriest, the blessing - the weapon - the strength of priests, our pride, our consolation, the light in our hearts, our mind, and our steps"
Met. Meletios of Nikopolis & Preveza, from his ordination.