I am not aware of a way to change the default font type or color from within the user interface. It can be done if you are using the email submission tool (meaning you send an email message to AxisTV). This tool allows you to establish the font, size, color, backgound, etc...
I forwarded your post to others on our staff.
Sean M. Matthews
President
Visix, Inc.
Direct 678.392.1752
Toll Free 800.572.4935