Citadel Dwarf Bronze is now Hashut Copper
->for citadel old to new:
http://www.games-workshop.com/MEDIA_CustomProductCatalog/m2320032a_Citadel_Conversion_Chart
even better link is
http://www.dakkadakka.com/wiki/en/Paint_Range_Compatibility_Chart
wich compares across Citadel old & new, Vallejo, Rackham, Reaper, P3, Coat d'Arms, and even gives hex code.