Jason Todd Red Hair Again

For those of you who do not know who Jason Todd is...jason todd is the 2nd robin and was killed by the joker nd later ressurected...upon his origin jason todd had red hair...this was the pre-crisis jason todd.
Post Crisis Jason Todd was brought back with a new origin and black hair....ever since then he has been seen with black hair. However in a recent batman and robin jason is once again seen with red hair.