Reporting numbers after a foul

[Vinski]

At camp this last weekend an evaluator corrected me on my verbal communicating of numbers when reporting fouls. I always say “white two – one” or “green one – three” while signaling in unison. He said I should be reporting the number as a whole, i.e. “white twenty one” or “green thirteen”. I guess I’m OK with that. However, when reporting numbers in the teens, it seems awkward. Verbalizing “green thirteen” while signaling a one and then a three doesn’t feel right.
What do you guys do?