What are the violet leaves good for?

There is no plant commonly known as "violet leaves." It's possible you're thinking of a different plant, or the name is a bit off.

To help me understand what you're looking for, could you please provide more information?

For example:

* Do you have a picture of the plant?

* What does it look like? (Size, shape, texture of leaves, color of flowers, etc.)

* Where did you hear about "violet leaves?"

With more context, I can help you figure out which plant you're referring to and what its uses might be.