Well, as a possibility.
From the definition: https://en.wikipedia.org/wiki/Color_balance
The gimp_gmic_qt plugin http://www.gmic.eu has a color balance filter. Only a single adjustment, the neutral color and only a single slider adjustment.
Snags, it uses a preview, not directly on the canvas and that is not real time, you need to refresh the preview with adjustments, although there is a before/after split option.
From the definition: https://en.wikipedia.org/wiki/Color_balance
The gimp_gmic_qt plugin http://www.gmic.eu has a color balance filter. Only a single adjustment, the neutral color and only a single slider adjustment.
Snags, it uses a preview, not directly on the canvas and that is not real time, you need to refresh the preview with adjustments, although there is a before/after split option.