I'm going to create some s60 Themes using "Series 60 Theme Studio 1.2".
Everything seems to work quite well, but the size of the sis-file becomes
much bigger than I expected it to.

After changing the icon-colors and updating most of the other images I
got a file size of 280kB. Just changing the icons (about 220 single images
and masks) produces a sis-file of 135kB. Since I have a file-size-limitation
of 100 to 150 kB I'd like to ask if there is any possible way to reduce the
size of those files. (without destroying the themes appearance - like blue
original icons in an dark theme)

Thank you so much for your time and help,