Sorry, but he is neither... he is mixed color... if you just want a fun colored flock of brahmas, then use what you have... but you made your thread in the breeding to standards forum... breeding to standards requires breeding like color to like color... mixing colors will just give you tons of...
Color variety should be bred to same color variety... I don't know if darks and lights can be bred together without mixing the color patterns up... pretty sure you don't want to to mix buff with either...