I ordered the green and made a classical fretless. Worked easily and sanded very well. Using now on a B C Rich.
The purflings are too narrow.
These strips are made from soft maple and can be difficult to achieve sharp lines. They work good, but I would suggest doubling your order because of the inconsistent width and at times thickness.
I have all colors, and they are really good constant color nice to bend. Only the red one is bad seems to be made from a different wood I just can't plane or sand it flush without chipping it. It's also way more flexible, a bit too flexible most time.