Umm.. pardon my french but... real life situation here...
Cop pulls you over for doing 125 in a 60. He is already mad at you. He looks at your papers, and sees that you car is orange on the paper, but it's now purple. He then get madder at you cause you papers are now false and you can be charged for that. So instead of getting a ticket for speeding, you are going to get one for false papers, or something like that.
Do yourself a favour and get the papers updated.