I've never colored my hair and don't plan to. I'm not all that gray
yet. Come as it may, I'm just gonna roll with it. Heredity has everything to do with it. My family is slow to gray. My Grandma was in her late seventies when she passed and had salt and pepper hair. Same with my Mom.
I literally grew up in a salon. My Mom and her sisters owned one for forty years. So I had every opportunity to do whatever I wanted to my hair and for free! When I was in my teens up until I was about fifty, I wore it long, no layers. The only thing I did was have it trimmed every couple of months. I just wasn't interested in fussing with my hair too much. I didn't want to spend time styling. I'm still like that. Keeping up with coloring is alotta work and I don't want to be a slave to it. So I'm not gonna do it! I also don't want to use chemicals on myself. Anything applied topically is absorbed into the bloodstream. That's not said to condemn anyone else for using hair color. It's a choice. Do whatever makes you feel good!
Speaking of wigs. I have a couple I bought for fun several years ago. I'm brunette so I bought red and blond wigs. One evening when my husband came home from work, I opened the door wearing the blonde one. The look on his face was priceless!
I wore it when we ate dinner and throughout the evening. He said, "It's like being with a different woman!" It was fun, lol. But I've never worn them outside my house.
If you're looking for wigs to wear, they can be quite warm but there are capless/lace wigs of both human and synthetic hair (or a combination of both) that are more breathable and offer more ventilation. Whether made from human or synthetic hair you must take care of them properly or they'll start to look ratty. You might or might not want to wear a wig cap under the wig. It depends. You can read about the pros and cons of types of wigs and wig caps and see which is right for you.
Here are a few sites that can answer some questions you might have. You can search google for more info, there's a lot out there!
Human or Synthetic Hair Wigs >>
https://www.headcovers.com/resources/wigs/human-hair-wigs-vs-synthetic-wigs/
Are Wigs Hot To Wear? >>
https://www.wigs.com/blogs/news/are-wigs-hot-to-wear
Capless Wigs >>
https://www.thewigcompany.com/wigs/vc/wigs-traditional_capless/
Wig Caps >>
https://www.simplywigs.co.uk/blog/do-i-need-a-wig-cap/
Ruby