checling out my heller liore 45 kit when i noticed the decals. they seem unusual, the film is thick and they look painted. do they go on and stay that vibrant and strong? any tricks to using them? will they matte down with dullcote or somesuch? i don't remember other heller sheets being like this, so is there something special here? i don t don't read french but they seem to be made by heller also. they're almost too cool to use.