Work steps can have different colours, in the production scheduler. The following describes the different meanings of the colours.
White = This work step is planned.
Blue = This work step is upcoming.
Purple = This work step is ongoing.
Green = This work step is completed.
Note
For more information regarding the Production, just follow the link.
When planning a work step and it is red, there is an error which has to be solved, so the new version can be committed.