action: only one color by "set color label"?

I would like to assign several color labels (e.g. blue and green) to a file.
Is that possible?
When I tried this in two consecutive actions, only the last assignment was retained.
If “green” was set first and “blue” in the second action, only “blue” remained.
Setting two colors in one action does not work.
I am using MacOS 15.4
Is that possible?
When I tried this in two consecutive actions, only the last assignment was retained.
If “green” was set first and “blue” in the second action, only “blue” remained.
Setting two colors in one action does not work.
I am using MacOS 15.4