An oak that's native here in Utah is Gambel Oak- Quercus gambelii. It could be a good candidate for you. I've seen the leaves be pretty small in nature and they're definitely hardy enough(heat and cold). Fall colors can be decent too.
Here is a link from Oregon State University about them: https://oregonstate.edu/dept/ldplants/qugam.htm
You can search Google images for them in their Fall colors, there's plenty to look at..
Here is a link from Oregon State University about them: https://oregonstate.edu/dept/ldplants/qugam.htm
You can search Google images for them in their Fall colors, there's plenty to look at..