Ok that’s interesting – what’s the difference?
Derp breath… Here goes
A colourway is a selection of colours. So you could buy your bike in the green red colourway or the yellow blue.
A colour scheme is about about how colours interact in colour theory. So for example a monochromatic colour scheme let’s say red would only use shades of red the green one… Only shades of green. A complimentary colour scheme could be a red bike with complimentary accents or a yellow bike with complimentary. There are others, triadic analogous etc
Colour pallet is the set of colours available to use. Primary colours, secondary, tertiary etc.
So you could have a bike that has
Monochromatic colour scheme
Primary pallette
In three colours.
Red Blue and Yellow*
*Not green as we are talking about paint here not light