What an adorable and beautiful BP, his colours are gorgeous and he has some really nice blushing!
Zebes is still very young so it's no wonder that he is staying in his hide most of the time, my BP was the same when he was little. BPs are more timid and shy as babies and get bolder when they become adults. I'd wager that once Zebes' gets bigger and he starts looking for females he will become more active as well.