I 100% believe that's a bogus rumor someone on the boards pulled out of their ass and CCSLC geeks ran with.
To add, the Bengals and Browns colors are purposely alike, play in the same division, and the NFL isn't enforcing anything.
Tennessee doesn't deserve the Oilers identity after changing their name, uniform and all likeness to the Oilers brand, having evolved into a team whose primary colors are now navy and silver.
Also, nothing's stopping the Texans from doing this: