The ability to set colours against Roster Classes was introduced to TimeTrak Professional in version 21.2 as outlined in that versions Release Notes. This has now been applied to both Mobile and App.
Please refer to the Release Notes for instructions on how to set this up.
Once settings have been applied, the same colours that are visible on the left side bar of Time Entries across all Professional Calendars to indicate to staff the roster class (or pay rate) the entry has gone to now also appear in Mobile and App.
Roster Class Colours have been set:
These display in Professional:
And now in Mobile and App: