Personally, I find the name "crab yellow steamed buns" a little attractive to me. First of all, this name has its own characteristics and is easy to attract people's attention. Why do you say that? Mainly because this name is unusual, it will make me feel that the person who uses this screen name is a person with his own characteristics and personality, because the screen name is not popular. Secondly, when I saw this screen name, I felt that the other person was a snack and must have a good knowledge of food. Now people are interested in food. They will definitely be curious to have a look when they see that the person with this net name has made a work or something.
Personally, I think the first screen name is very good and stylish, and the theme is more prominent. The second sentence has a non-mainstream feeling at first glance and is not attractive. Generally speaking, I contacted and chose the first screen name.
Thank you. This is my opinion.