Title default is set as font-weight: bold in the Template Configuration Window under Template Options in the Restricted Formatting Styles.

Subtitle default is set as font-style: italic in the same place as the Title.

Smallest = font-size: xx-small

Smaller = font-size: x-small

Small = font-size: small

Normal = font-size: medium

Large = font-size: large

Larger = font-size: x-large

Largest = font-size: xx-large

This is a H1 Header 

Droid Serif 14px Bold — Default Color #3D3C39

This is a H2 Header 

Droid Serif 18px Bold — Default Color #3D3C39

This is a H3 Header

Droid Serif 16px regular — Default Color #3D3C39

This is a H4 Header 

Droid Serif 14px regular — Default Color #3D3C39

Preset colors are available by using the text color button. For example, this is FireBrick.

Hex codes can be added by clicking the source code button. This is #1673A4.