Cutting paint

[Ben]

I've never looked after my paintwork, and this has resulted in all of the panels being different colours from one another, some of them being incredibly pink.

I decided to try and make it look better, so I bought some meguiars 105 and 205, and some banana armour wax.

The worst panels were the roof and rear passenger quater, so I thought I'd start with them. The 105 started to remove paint from the quater immediatly and to my suprise quickly turned the panel from light pink to cherry red. I was very excited and thought I was going to have a red car again within a few hours.

However, for some reason the same 105 compound and same pad will not remove any paint from any other panel. I've tried it on the roof which is pink like the quater was, tried it on the boot which is red/pink and also on the door which is red.
What's going on?!