How would the color of the diorite change if it contained less hornblende and more feldspar?

If diorite contained less hornblende and more feldspar, its color would likely lighten and become more pale or grey, as feldspar is generally lighter in color compared to hornblende. The reduced presence of hornblende would diminish the dark tones, while the increased feldspar would add lighter hues, resulting in an overall lighter appearance for the diorite.