Option Lost to Easily Change Headings Text Color and Size

Previously there was an easy setting to customize the size and colors of the various headings. I had done so and had set H1, H2 and H3 to my liking. Recently they reset to just black and I can't find the setting to get my colors and sizes back. I have looked all through Appearance->Customize menus and can't find it. Is it gone for good? Can someone point me in the right direction? Thanks