"SKIN allows any BLACKWING7 prime lens, of any manufactured tuning, to take on a new range of creative looks through the addition of replacement front and rear lens elements utilizing new, specially formulated, non-radioactive amber coatings. The unique look of lenses fitted with SKIN is a tribute to lenses made during the "Thorium years". The warm amber hue produced by SKIN coatings and radically unique gold and intense ruby red ghost flare characteristics offer the choice of markedly different looks to be created over and above standard BLACKWING7 lenses. As the SKIN lens elements are replaceable, the process is fully reversible."