Previously in 3.11 users were able to load custom CSS [0].

Customer has requirement to change OpenShift color theme as part of their internal application branding.

Today this can be accomplished with a dynamic plugin, however restoring the more simple approach presented in 3.x would make the feature easier to implement.

[0] https://docs.openshift.com/container-platform/3.11/install_config/web_console_customization.html#loading-custom-scripts-and-stylesheets