Help on bar chart color

hi I need to use a different color the 5 series of my bar chart | eval cpu_range=case(process_cpu_used_percent>0 AND process_cpu_used_percent <=20,"0-20", process_cpu_used_percent>20 AND process_cpu_used_percent <=40,"20-40", process_cpu_used_percent>40 AND process_cpu_used_percent <=60,"40-60", process_cpu_used_percent>60 AND process_cpu_used_percent <=80,"60-80", process_cpu_used_percent>80 AND process_cpu_used_percent <=100,"80-100") | chart dc(host) as "Number" by cpu_range I have tested many things with rangemap, charting.fieldColors or charting.seriesColors but nothing works! is anybody can explain me what I have to do?? Thanks