I struggled with this as well but finally found where to change the settings when we updated from 5.5 to 6.0.1 saw the color scheme changed but the files mentioned - highchart.datamapper.js had not Go to jasperserver-pro/optimized-scripts/bower-components/bi-report/src/adhoc/chart/palette - the old color palette is oldColorPalette.js and can be renamed to defaultPalette.js to update