Wouldn’t it be nice to have an interactive tool that allows you to play with visible absorption spectrum curves and see how the geometry and distribution of single or multiple curves affect the resulting color? Can the same color be produced from different combinations of curves?

Something similar should be applied for particle size distribution curves, where you see the effect on the distribution of particles in a virtual two-dimensional cross section.

Someone needs to code and implement this. It would help enliven the inanimate textbook graphs .