Problem: coloring cell in AG-Grid depending on it's content

[JustinWolffEKO]

Hello, I encountered a problem using AG-Grid.
I want to change the color of a cell into the grid depending on it's value.
The grid consists of 22 columns with several rows. I found a solution for JS on the official AG-Grid documentation JavaScript Data Grid: Cell Styles. In this documentation, the variant of using the Cellstyle and the CellClassRule are listed. With the Cellstyle I can only change the color of the whole column and not a special cell. The CellClassRule doesn't work at all bc I can't include the JS for that rule by using justpy.

Does anyone possibly have an idea or a solution how I can color a cell depending on it's content?
I would be very grateful.