Dorit Kemsley is giving us a behind-the-scenes ... "The dark hair, I was ready for a change. The brown hair was just a choice. I'm not on a budget by my husband." ...

After undergoing brain surgery, RHOBH alum Teddi Mellencamp revealed Dorit Kemsley hadn't immediately reached out.

Related: Dorit Kemsley Clarifies Her "Choice" to Dye Her Hair Brown: Find Out What She *Just* Revealed "One has nothing to do with the other," she continued. "The dark hair, I was ready for a change.