Here is the list of color options for the 2021 Tahoe. According to this list there are 4 new colors: Empire Beige Metallic, Midnight Blue Metallic, Graywood Metallic, and Cherry Red Tintcoat. The Cherry Red apparently has an additional charge.
Here's the full list:
Iridescent Pearl Tricoat
Satin Steel Metallic
Summit White
Black
Shadow Gray Metallic
Empire Beige Metallic (New)
Midnight Blue Metallic (New)
Graywood Metallic (New)
Cherry Red Tricoat (New)
Here's the full list:
Iridescent Pearl Tricoat
Satin Steel Metallic
Summit White
Black
Shadow Gray Metallic
Empire Beige Metallic (New)
Midnight Blue Metallic (New)
Graywood Metallic (New)
Cherry Red Tricoat (New)