Thanks for asking. FormsCentrel is not support this currently.
Thank you for taking the time to tell me something I already know, I have submitted it as a future feature request, but it was not included, I guess it was rejected as a not good enough feature request to be worthy of a vote.
Could you at least consider the way the colours are assigned automatically, so they at least run in some sort of logical order. I understand that there has to be a vivid difference to highlight the field rsponses, but it just looks wrong. When the responses run from '1-Good' to '5-Bad' for example; Good would be Blue, and Bad would be Green, I would think 1-Good would be GREEN and 5-Bad would be RED, Or is it just me?
The software doesn't know what the items are that it is graphing - good vs. bad, age ranges, days of the week, etc. It doesn't know or understand the concepts being selected in the form, only that a choice has been made.
Instead, modifying the form to match the color palette would be a way to handle it.