Are the output settings in the software appropriate?
Try changing the VersaWorks and Roland DG BF-16 Driver output settings. Specific combinations of Print Quality: (VersaWorks), Direction: (Roland DG BF-16 Driver), Feather Level: (Roland DG BF-16 Driver), Feather Type: (Roland DG BF-16 Driver), and other settings may cause the colors to be uneven, and results may also vary greatly depending on the color-profile selection. Select settings appropriate for the object to be printed on.