Honestly, I haven't used it still letting it really dries up and im on my 2nd coating, planning 1-2 more coats before using it and hopefully it will stays coz, im really happy with the results. If you think its nice in the picture, its better in actual look.
I got it on ebay it says waterproof permanent paint for rubbers and it comes in pens so, its easy to apply, you just have to be artsy or else it could be a messy job. The downside, it took awhile for the shipment to come coz its from china (what do you expect). and I should order the one from the US!