Camouflage on lens barrel surface

It looked transparent to use without cleaning in the posterior element of Zoom-HEXANON AR 35~70/3.5 2nd generation at the beginning, but careful investigation found out small colony of hatred mold inside. Without any hesitation to disassemble thoroughly, all the rear groupe was removed and cleaned including applying edge black coating for the most posterior glass circle. With all this kind of thorough measures, I will have some clean & transparent pics by this zoom lens, anyway adorable one.
My lenses are all camouflaged with any pet bottle decoration, so to speak Urban town camouflage. By applying this kind of funny appearance on the barrel, I can reduce the high presence of Tele-photo lens in front of the general public leading to soothing facial expressions of the others. This is why I apply camouflage on the camera lenses with funny & toy-like coloring, but all are reversible.