He's definitely a snow, and due to the fact that he hasn't turned yellow and appears now to be an adult, that makes him really nice looking. In my opinion it's kind of a personal decision whether or not to call a gecko a "lavender". It seems to me that most "lavender" coloring refers to the color left when black markings have faded. I don't find it a very useful designation and think that considering him a fine example of a snow that has retained the black and white coloring is something gorgeous in itself.
Aliza