In the 14.1 release notes it says.
In the summary reports in Process Screening and Process Capability, the following values are color coded: Stability Index, Ppk, Cpk, Cp, and Target Index. Green, yellow, and red indicate adequate, marginal, and poor stability or capability. Output for the Save Summary Table option in Process Screening is also color coded. The color coding can be customized or removed.
I've tried finding how to change color coding or remove it, and can't find it. Also, it definitely isn't color coding on the Save Summary Table.