If a generic folder is modified with a color or perhaps the picture, if an alias is made of it the alias is shown as a generic folder. The workaround is instead of making an alias make a symbolic link. There are various Apps that can do this and it can be done in Terminal as well. My favorite is a service named SymbolicLinker.service and it is Silicon compatible. It is a contextual menu and making a symbolic link is as simple as choosing the folder, right clicking for the contextual menu, and choosing the service. To install, simply download and place it in the Services folder in the User Library. Here is the link if if interested:
Release SymbolicLinker 2.2 · nickzman/symboliclinker · GitHub
Release SymbolicLinker 2.2 · nickzman/symboliclinker · GitHub