If you are really that concerned that someone will see you walking around with a fancy camera and target you for theft, then you must be going somewhere dangerous and nothing you do to camouflage it will make one bit of difference. I mean, if you're planning on going to Libya or Iran or some place like that, your red ringed lenses are not what is going to draw their attention anyway. What will draw their attention is a fanny pack, camera bag of any sort, or anything that makes you look like you don't live down the street from them. If you are of a different ethnic background then your surroundings, you may as well paint yourself bright pink because in a dangerous place, camera or no camera, you can easily become a target/victim regardless of what you do.
My suggestions are no bag on your shoulder, use a BlackRapid strap or something similar and keep the camera concealed the best you can.
You could always go to a sign shop and have them design you a wrap for your camera/lenses. I actually did vehicle wraps for a long time and the vinyl used for them is very conformable, so a round lens and curvy camera is no problem for someone that actually knows what they are doing. Also, wrap vinyl is designed for easy removal with little to no damage to car paint after 7 years. So, wrap vinyl on your camera for even 6 months will not hurt a single part of your camera and goo won't be a factor either as it won't have time to seperate from the vinyl. IF by chance there is a tiny bit of goo after removal, you can get Rapid Remover (sign shops use it and swear by it) and it will be gone in less then 10 seconds with no damage to your camera.
If you don't want to wrap your stuff, you could still go to a sign shop and have them contour-cut you a few pieces of matte black vinyl to at least cover up the logos on your camera/lenses.
Just my 2 cents...