It's entirely up to you, but I have to wonder if it'll be worth it. NewFaces are expensive, and there are never going to be that many of them out there. Of course, you can make some assuptions about the dedication of people who have newfaces, and assume a much higher percentage will want colored buttons. The empeg buttons had no alternative, and I'm gratefull that you took it upon yourself to break the curse. Seeing as the farnell buttons already come in clear and black, it seems a much less pressing need.

All that being said, if you accept that it's a labor of love and you want colored buttons for your newface, go for it.

Matthew