How to change piping color on Corbin Seat?

[KiowaEagle_imp]

I know this sounds cheesy but have you thought of using magic marker? It won't make them black but should darken them enough to make them less of a stand out. Anything you use to coat them is going to rub off in spots. Might as well use something that's easy to apply.

Edit: just saw that you did think of it in the first post. I'd still consider testing it at an end spot. Might look better than you think.