Soldark do a clear but then you get the clear between the rest of the graphic if you don't weed and as the OP said you would loose the punch of the colours without the white backing on dark materials.
Laser print WoW or SunAngel would do it easy BUT both succumb to washing over 40C or tumble drying and will then crack up hardly noticeable on non stretch material but CRAP on stretchy material.
