Cacti graphs

I use the Cacti PowerDNS auth plugins to track DNS query statistics for my PowerDNS servers. I have modified the graphs to sum the data from multiple hosts, however, these graphs are displaying inaccurate data. I also have graphs that overlay the total questions/answers statistics but it's summing the data incorrectly. I need this fixed to show accurate data. I also want the colors/graph style changed to make it easier to read and spot trends