larger key squares in display theme style legend

[ricp]

How do you enlarge the legend key squares in a display theme style legend?

Can you add schedule information to this legend like the total SF of a particular display theme style?

[David_W_Koch]

If you edit the Display Theme Style, on the Legend Format tab you can increase the text height, which will then increase the size of the key square.  So far as I know, you cannot add columns with other information to the legend.