My team uses top-level folders to organize tasks by strategic initiatives (ex: Partner Marketing) & sub folders to organize more tactically (ex: Partner A, Partner B, etc.).
We like to color code top-level folders to help prioritize tasks when looking at them in aggregate.
This is incredibly helpful in making Wrike navigable, but when we may have 15-20 subfolders, assigning colors one-by-one to keep things organized becomes cumbersome quickly.
It would be nice to have the option to assign a color to all subfolders/projects in a parent folder, or at least be able to shift+click to bulk select folders.