Color coded dropdown options

I have a dialog list field that picks up multiple options using @dblookup to get the values from a keywords view.

I think I know the answer to this question, but is it possible to have the values available to the user display in the field in different colors?

IE

Value 1 (green)

Value 2 (green)

Value 3 (Red)

Value 4 (blue)

Subject: Color coded dropdown options

In a web browser you could do this, involves some HTML/CSS interaction.

Example

Subject: RE: Color coded dropdown options

Thanks Carl - unfortunately it’s required in notes only.