I have one of OPG's colored dash pads for my 68. The fit seems OK, but the color (Ivy Gold) hasn't stood up to the intense Arizona sun. Not a problem in my case though, as I really needed a dark green one anyway (it was a fathers day gift from my wife)and will eventually dye it.
If I was doing a restoration, I would have Just Dashes redo my original. I believe they do colors.