Staining plastic key tips

[Carlos Ralon]

I need to color match 2 new plastic key tops to the older plastic.  What is the best? I tried an iodine mixture but it would wipe off, even the next day.  Someone with a home brew?
Carlos Ralon, RPT
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20071016/41829b56/attachment.html