Hi Ron

Presumably you are referring to the one shown in the first image below.

I don't think the color can be changed, but what came up in a recent post is that you can select the chord in the Chord Sheet and press Control<F2> and edit the value directly from there (see second image). Press Enter when edited / entered value is complete.

(Incidentally, I agree that the contrast in the current chord box is not ideal... Hint)

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