I did it a couple of weeks ago as I am planning anyway to have the side pannels custom painted this winter.
It is dead easy to do, with your fingernail (or a wooden toothpick), you patiently start at one end and as soon as a bit of the stiker is gone, you just have to peel the rest off.
You need to know that after doing this, you will still see the contour of the sticker as I believe a fine layer of varnish was applied after the original stickers were put in. It is almost invisible if standing 1 meter away from the bike, but you will definitely see it and you will be able to feel it with your fingers. However, It does look awesome without the yellow lines (just a personal opinion though).