Pass --with-term=rxvt-unicode-256color to configure (when terminfo package be ready)
rxvt-unicode-9.09-alt1.20100823 -> sisyphus: * Mon Aug 23 2010 Alexey Gladkov <legion@altlinux> 9.09-alt1.20100823 - New snapshot (9.09 20100823) - Add ':' (colon) to default CUTCHARS (ALT#23929). - Change $TERM to rxvt-unicode-256color in 256-color mode (ALT#23928).