(https://community.powerbi.com/t5/Issues/Different-colours-for-different-columns-in-a-matrix/idc-p/24...)
As described in the link, I would like to suggest PowerBI allow developers to configurate the font as well as background colour indiviually for each column (instead of making the setting a a global setting as a whole). This would raise the readability of the matric in some cases, especailly when some columns are related to each other so that they should be grouped together using the same colour.
on:
Deployment pipelines don't support M365 groups