owncolmap reintroduced, basically the same code, but with a switch -C. didn't use the -v switch as in the patches. I believe it is confusing and should be reserved for -version information. Other than that I can say that the code does not work as it does in the patches... haven't found what's wrong with it. bit shifting?
sourceforge.net/trunk/rdesktop/rdesktop.c
sourceforge.net/trunk/rdesktop/xwin.c