Hey guys, i've been buying a few new ventilation hoses from Toyota recently and have noticed that they have yellow and white marks on them. I can't work out what they are for. I thought maybe the yellow is for going towards the engine and the white is away from the engine but i dont know.

Here's a picture of one of the hoses. This one connects to the stock bov and 3000 pipe on the 7MGTE.



Cheers
Sam