Painting Tires Legal?

[Koko Ed]

In 2012 at the inaugural Montreal Regional a rookie team would paint their tires EVERY MATCH whatever colors their alliance was (apparently there was an 8 years let loose in their pits with cans of paint and lots of free time). Every match they would leave blue and red skid marks all over the carpet. It was like someone roadkilled a Smurf. The head ref repeatedly disabled them and I think after a while told them to cut it out or else. Needless to say no one wanted the carpet afterwards.