* Diorite with less hornblende: Hornblende is a dark, often black or greenish-black mineral. As its content decreases, the diorite will generally become lighter in color. This is because the remaining minerals, like feldspar, are typically lighter shades.
* Diorite with more feldspar: Feldspar is a mineral that can range in color from white to pink to gray. Increasing the feldspar content would make the diorite more whitish or pinkish. The overall color would be less dark and more "pastel".
In summary:
* Less hornblende = Lighter diorite
* More feldspar = More whitish or pinkish diorite
Important Note: The exact color of a diorite depends on the specific types of feldspar and other minerals present, and their proportions. So, the change in color may be subtle or more dramatic depending on the particular composition.
