Use Chart Elements and Color Schemes
Combining color schemes and charting elements can refine the aesthetics.
GraphicsGrid[{{BarChart3D[RandomReal[1, {5, 5}], ChartElementFunction -> "Cylinder", ChartLayout -> "Stacked", ChartStyle -> "SolarColors", ChartBaseStyle -> Directive[Opacity[0.6], Specularity[White, 30]]], PieChart3D[{Range[6], Range[10]}, ChartStyle -> 61, ChartBaseStyle -> Directive[Opacity[0.8], Specularity[White, 30], EdgeForm[Gray]]]}, {PieChart3D[Range[12], ChartStyle -> 52, SectorOrigin -> {Automatic, 1}, ChartElementFunction -> "ProfileSector3D", ChartBaseStyle -> Directive[Opacity[0.8], Specularity[White, 30], EdgeForm[]]], BarChart3D[Range[-5, 5], ChartStyle -> 53, ChartElementFunction -> "ProfileCube", ChartBaseStyle -> Directive[EdgeForm[Gray], Opacity[0.8], Specularity[White, 30]]]}}]