Light Gods are the pantheon of good aligned divine beings resigning in their own realm. So far there has been no differentiation made - no special worship for any Light God directly. The champion of the Light Gods and their chosen messenger is the Avatar. The latter is still of human descent, though, and has his own personality. He isn't privy to the Light Gods' doings and reasons thereof and can, will and did clash with them when he didn't like their orders, but followed them non the less.
In sacred Temples of Light any good being can ask to speak with the Light Gods directly. If a being of evil alignment wants to speak with them, they need a patron to negotiate preemptively to prevent any automatic defensive wards on sacred ground. Furthermore the direct contact with the Light Gods will at least temporarily burn out the powers of the client based on Dark Gods-magic.