How do I change the color of the red text? (About me, Who I'd Like to Meet, etc..)

You can use the color CSS attribute like this:

h4, h5 {                           /* replace with your desired selector */
	color: hotpink !important; /* replace with your desired color */
}

The titles you mentioned are set with a very high specificity, so the simplest method is to just use !important.

Thanks!