Hi there! A little while back i bought a 2001 Jimny for cheap and decided I wanted to make it my own, This certain Jimny came with those nasty looking blue and silver 90's style speed stickers down both sides

so I've decided to try remove them, however the blue stickers are really cracked and a nightmare to get off! the silver just peeled off in one, but the blue is stubborn as anything! So if anyone could give me an idea that is quicker than using a hairdryer it'd be much appreciated!
As you can see from the pictures (excuse the dirt) I have actually done one whole side, but the other side seems to be tougher. It has also left a slight stick mark on the edges of where they were so if you had any idea what would get that off that would be awesome!