Infopath by default has a set of color schemes, I am wondering if it is possible to add my own color schemes to the list?
Unfortunately it is not possible in IP 2007. Hopefully 2010 will change that but I haven't checked it out yet.
A possible workaround is to extract the form files and manually modify the CSS for the color scheme. Slightly more work than simply choosing a scheme from the picker but not entirely unfeasible.
Greg Collins, one of the MS Infopath MVPs, suggested this here and wrote up specific instructions in a post here.