Value mappings color change not working?

Hi,
I’m trying to change the colors of the values in a table panel.

As you can tell from the picture below, I am able to change the name of the severity value for each category, by adding the capital letter in front, but the mappings seem to ignore the color change.

I am aming to change to color of the text “Medium”, “High”, “Critical”.
Is this a bug or am I doing something wrong here?

Any suggestions?
Is there some kind of bug in the version 9.5.3?

Looks like it is case sensitive?