This morning I asked Jamie - a little half heartedly, I admit - why they had been given different colours.
And I could tell by the look on his face that he knew as well as I did that it was a stupid question, deserving of a stupid answer. Which promptly arrived.
"I got a white one because my name is Jamie White," he announced, dismissively.
"Charlotte got a pink one because her name is Charlotte Pink."
No-one likes a smart arse.