Reference

All functions
cpt()	Return a colour palette function or vector from the cpt-city archive
cptcity cptcity-package	cpt-city: Colour Gradients for R
cpt_names	Names of all 7140 colour gradients
find_cpt()	Find colour palette names by keyword search
lucky()	Return a random colour gradient — "I'm Feeling Lucky" for palettes
show_cpt()	Visualise one or more colour palettes side-by-side