What color are the Sig Pro grip inserts?

For both Sig Pro finishes, Nitron and Two-Tone, the thinner/smaller/stippled grip insert is black. The thicker/larger/padded grip insert is all-black for Nitron-finished Sig Pros. Two-Tone Sig Pros, however, have grey-colored rubber padding on the thicker/larger/padded grip insert.

Here is a photo of a Two-Tone Sig Pro with the thicker/larger/padded grip insert installed, which illustrates the grey-colored rubber padding, along with a photo of the grip insert itself that better shows the grey-colored rubber padding and the extent to which it wraps around the rear of the grip insert:

Interestingly, colored Sig Pro grip inserts, based on the thicker/larger/padded variety, were introduced at the 2003 IWA show. Like that of the Two-Tone Sig Pro, the rubber padding is going to be made available in various colors.