Hi:
In SAS 9.2, there are some possibilities that may help you. The textdecoration style attribute allows you to specify underline or overline attributes for text and there are also various bordertopstyle, borderbottomstyle, etc attributes that you can set. In addition, you will be able to set one style for a TITLE1 statement, for example, versus a different style element for TITLE2 -- which would be the ideal solution/approach for what you want to do.
If you look at the template and how border changes were implemented for ExcelXP in this paper
http://analytics.ncsu.edu/sesug/2008/CS-050.pdf (starting on page 14, including a discussion of the new STYLE/MERGE attribute for CALL DEFINE)
...you'll have a preview of what will be available in SAS 9.2.
For SAS 9.1.3, I'm stumped. You may have to give up the red background and do something else...like make the background white for all the titles and just use bolding and colors to highlight the titles on the different sheets.
Or, you might check with Tech Support to see whether they have any ideas. Until 9.2, however, I think that all you can do is change the foreground color of the system titles using the color= option.
cynthia