3D Scatter 'color by value' not working correctly #169
Description
When I make a 3D scatter plot of 3 data sets and try to color by some catagorical data, it never seems to update the coloring.
The only way I have found to color based on a 4th column is to use the 'group by' option. However, this ends up plotting 'first' vx 'second' vs 'type' in addition to 'first' vs 'second' vs 'third', which I don't want.
