Can you edit the header further? (text, size, color)? Can you center it?

Can you center it also?

How do you edite the title? Size/Color/Font?

How do you return to old color scheme?!?! I hate the new one and need help bad.

So, I had a green layout before and now it is just white? I cant even change it back if I tried? Even when I select light layout with the green color selected, the background is still white. HELP