I keep seeing people saying CS leaders wear the red numbers on the Centennial shirt, but what I haven't seen is something from BSA that says so, clearly and unambiguously. And one catalog sheet that says so isn't clear and unambiguous. I have a uniform inspection sheet with a model wearing a Centennial uniform, a Cubmaster patch, green numbers and a Wolf cap--an "illegal" combination (only Den Leaders wear the den cap as adults), so I don't trust Scoutstuff.org.
So, who has a link? "I heard it at..." won't do.