Since 2003-11-30 there is released a new sylpheed-iconset. Here is the new eBuild Reproducible: Always Steps to Reproduce:
Created attachment 21606 [details] sylpheed-iconset-20031130.ebuild
Created attachment 21607 [details] ChangeLog
Created attachment 21608 [details] digest-sylpheed-iconset-20031130
added some fixes to the ebuild (file permissions, INSTALL-file was added to themes dir, themes only worked in claws with the old version) and commited to cvs