My pleasure!
Do you have a magic shop in your area that you can make it to? If so they are bound to have some type of TT, if not...well, the audience isn't ever suppose to see it anyway. So you could get away with just about any one you buy, again it depends on how much work you put into it.
The color of it matching your skin tone is a good safety net I suppose, although there are some magicians who have used green or even red thumb tips and have never been busted. If you try a few out and find that one that looks a bit more realistic makes you feel more confident, it's probably what you should go with.
What works for another may not work for you and vice versa.
It's solely my opinion of course, but I think technique alone will get you by no matter which kind or color you use, and hey if you accidentally flash it and someone makes a comment, take it off and throw it at them...I bet they won't see that coming!
Okay, don't throw it at them...I was only kidding! Haha
Good luck on finding one you like, when you get good enough at it post some videos here showing off your skills!
S°