This pack makes the color of wool better reflect the ones used before 1.12 (the world of color update).
I have created this for multiple reasons:

• The old colors are different to the concrete colors, giving more variation.
• I wanted the wool to work with current builds, rather than making them feel different.
• The programmer art wool isn;t uniform - some pixels stick out more than others.

This will also tweak the color of banners and sheep if Optifine's "custom colors" setting is enabled.
After all, banners and sheep are both made of wool, so why wouldn't they be similar colors?