Human consciousness is a rich and wonderful thing. In any given sense modality, we enjoy an incredible variety of qualities. Moreover, prima facie the delightful qualities we enjoy in one sense modality seem to be wildly different from the sensory qualities we enjoy in any other sensory modality; what it’s like to smell, for example, seems to have nothing in common with what it’s like to see a colour. For the panpsychist all this richness and variety results from fundamental kinds of mental qualities, which panpsychists tend to suppose are quite small in number (e.g., for Russellian monists basic conscious properties are the intrinsic nature of the basic properties picked out by physics, which are relatively few in number). The palette problem (Chalmers 2016), expressed as metaphor, goes as follows: How is it that the richly painted canvas of human experiences is produced from such a small palette of paints?