When using Symantec Endpoint Encryption Manager Software Setup to generate client installers, the default configuration options for the Preboot screens are as follows:
A Text Color of black or white can be selected. The default is black.
However, if The SEE logo is chosen, the Text color setting is ignored when the generated MSI file is installed on a client machine.
This is by design.
The Text color setting is only applicable when A custom image is configured. This applies to both the Preboot Splash Screen and Preboot Login Screen.
In addition, the custom images are only applicable to client machines running BIOS. They are ignored by machines running UEFI.