This is a current H2 heading on blogs. 

This is what we want the H2 heading to look like on blogs (current H2 style below). 

This is what we want want the H3 heading to look like on blogs (current H5 style below).

We would want the option to make them bold if we decide to, but not bold by default please. 

This is a H1 heading 

This is a H2 heading

This is a H3 heading

This is a H2 heading 

This is a H5 heading

This is a H6 heading