Changeable title; Just select for fourth button

Select your favor of style and then click on the style that you wanted to change. Basically, click on the heading of the type of style.

Color of Text

Size of the text

Text Font Family

Changeable title-don't know why I decided to put it as a style

Background Color

Hover over the cell and enter in the URL of it in the input. You have to double click in order to delete cells.