Another anecdata - my cat growing up was orange, and he was plenty smart. He was very relaxed/chill but would come when called and was an excellent hunter of the house mice.

His mom was a very intelligent calico (she communicated with people impressively well), and his dad was an unknown feral cat, so I think his smart-cat genes were more noticeable than whatever correlates with orange.

So did my orange. He learned to open doors so he can maybe get some food.

He doesn't play with any of the cat toys (our other cat loves those and begs to play), is barely active and only runs (his whole belly jiggles side-to-side when he's running) after his dental treats which we throw so he can get some exercise.

He's an odd ball for sure. Goofy, loving. A little chubby, but the vet says it is probably fine considering his laziness and he is healthy otherwise (knock-wood).

I LOVE MY ORANGE CAT LOL