Custom Color and Non-Working Time (Pro)
If you use Pro version, you can use custom colors both for text and background. Use RGB color format to define a color for the web part.
Users of Pro version can select special color for non-working time. For example, you can select grey color for non-working time. This may help you to see where it is working time and where the non-working time is at the moment.
Select the color for non-working time and define start and end time of work.
When it is non-working time, the web part will be highlighted with a selected non-working time color (grey color on the screen).