You can combine any *color with the following tuning key parts:
The "tuner post" (the part where the string wraps around) on ALL colored (red, blue, green, purple) Sperzel's is chrome plated..
Also, it should be noted that the mounting nuts and washers are also chrome plated on all colored (red, blue, green, purple) sets.
All Black tuners have black mounting nuts and washers, and chrome plated posts.
All Gold satin and Gold plaited tuners have gold plaited nuts and washers, and gold plated posts..
All Nickel plaited tuners have nickel plaited nuts and washers, and nickel plated posts.