We have a number of projects running in Resource Management. We use projects to schedule not just billable project work, but a lot of internal projects tasks too (such as training, non-travel time, PTO/vacation). Currently it's only possible to differentiate projects by choosing project type, which gives you three options.
I would like the ability to choose the colour a project should appear as on the Schedule view. It would be much easier if you can quickly see red, for instance is PTO/National holidays, orange is training, purple are billable projects, light grey is non-travel times etc