Yes, you can change the color in camera! And it’s best to do it that way if you’re shotting jepg. Changing the white balance (coloring) after the fact will make your picture more grainy.
You should find the white balance in your shooting menu. It’ll be labeled with wb or a little picture of a sun, cloud, lightbulb etc. You set that to whatever lighting conditions you’re shooting in. For example if you’re in full sun, set it to the sun.
Keep learning!
-Hannah
Here’s a Lenspiration lesson about white balance.
https://www.lenspiration.com/lesson/understanding-white-balance/