Is your feature request related to a problem? Please describe.
I want to be able to color specific cells based on the row and color.

Describe the solution you'd like
I know that horizontalLineClassNamesForGroup can style an entire row, but I would like to have a function that would receive not just the group, but the group and also the header time interval so I can style each cell in component.
Here's a example of what I need (paint painted)