Hi Ted,
That explains it then - the free version is a simple "reader" type product without all the features of the paid-for products. You can give either Musician or Composer a try and see how you like them. You can do much more with them than just set colors - you can also set up practice sessions, rearrange pieces, or even add/edit notes and performance variables (in Composer).
The trial versions are available at
www.notation.com/Download.php
ttfn,
Sherry