Interpertation on Bumpers: Do the bumpers need to display the team numbers?

[Team 2524]

We have some old plexiglass that has our team number on it and we were going to mount that on the robot. Do we also need to put the team number on the bumpers?

I was curious since on the 2011 FRC inspection checklist for Logomotion mentions:

"Team number displayed with 4" tall x 3/4" stroke, on the bumpers, 4 locations at approximately 90 deg spacing, in contrasting color or background."

Thank you