Hi Michał,
I did some testing and it looks like it is possible to set row coloring based on a calculated column, but it requires a bit of a workaround.
So in short, the row coloring is working without any issues for all the types of calculated columns (text, number etc.) except for the "Lamp" type.
How to make it work for lamp:
-change the configuration of the calculated column - from type Lamp to type Number
-configure your row coloring based on this calculated column and save the changes
-go back and change the type of the calculated column from Number back to Lamp
It should work just fine.
We'll make sure this is fixed in one of the next releases.
Cheers
Dawid