Here is what appears to be an exterior color palette for the upcoming 2021 Ford F-150. This report comes to us via F150gen14.com forum and Automotive touchup.

Here is the color list based on this unofficial source.

Antimatter Blue Metallic
Carbonized Gray Metallic
Space White Pearl
Oxford White
Star White Pearl
Race Red
Kodiak Brown Metallic
Stone Gray Metallic
Lucid Red Pearl
Smoked Quartz Metallic
Velocity Blue Metallic
Guard Metallic
Lead Foot Gray
Iconic Silver Metallic

Agate Black Metallic

The report also suggests that 2021 Ford F-150 production will start this July 2020, and first trucks will reach the dealerships as early as September 2020 (or fall 2020).

As this time, we do not have official information about the upcoming 2021 Ford F-150.

Source: https://www.tfltruck.com/2020/02/are-these-the-new-2021-ford-f-150-exterior-colors-report/