gradient vs stepped data

For some data it might make more visual sense to see it in stepped form, not a pure gradient, i.e. instead of going from rgb# 0, 1, 2, 3, 4, 5, 6, 7, to go 0, 2, 4, 6, 8, or 1, 4, 8, 12, 16. to make the representation more visually helpful to humans to be able to differentiate different values.

Also it might sometimes be better to see the data as a gradient, so best to create another chart, rather than modify the existing one.