Can't say for sure, could be a boy since the abdomen is just fat. But ventral sexing any C. versicolor is tricky until the 3'' mark. My luck with arboreal T. sucks, I always have higher chance of males when it come to arboreal T.'s.
Leaning female. But I agree with @Liquifin in that these guys can be a bit tough to sex ventrally at smaller sizes. I was convinced mine was a male until she hit the 3" mark, when it became painfully obvious that she was female