DO
Lead with purple #7856FF; use the warm spectrum for segments/series
Give funnel steps both overall and step-to-step conversion %
Show dropoff explicitly (coral) between steps
Set counts, event names, and IDs in the mono stack
Keep the canvas light so chart colors carry meaning
DON'T
Don't reassign spectrum colors between segments within one view
Don't invent dark surfaces; anchor on the real deep purple #15003F
Don't use coral for anything but dropoff / negative
Don't set metric counts in a proportional font
Don't show a funnel step without its conversion rate