That's the irritating thing about getting an upgrade. They tear off the tags you have so labiously and clearly printed to slap on new ones you on which you have scribble your new cabin number. Usually it is a new color after you have conditioned yourself for months looking at the original color. After you have memorized every detail of your original room from months of pouring over the brochure, you have to wait through the check in and boarding process to see you new room. The porters and staff don't help by constantly reminding you how much nicer your new room is going to be and how much more you are going to enjoy it.
Upgrades can be traumatic.