Help removing decals


Maximum Pace
I recently got myself a pair of Miche training wheels with white rims. I think they would look even nicer if I can get rid of the decals on the rim since they do not really match the frame's color scheme.

How can I get this job done cleanly and efficiently? I read somewhere before that one should use a hair-dryer...but I'm not sure at which stage....after peeling off the decals or before? Any other urawaza?