I work in large company and We are building our UX guidelines for new applications. We have lots of legacy LOB applications with workflows that assign tasks to humans.
Some of them are simple tasks that have 3 outcomes - e.g. "Accept", "Refuse", "Correct", some of them have more choices, e.g. "accept and create request for price", "accept and ask for additional comments" and so on...
In legacy systems, back in 90's somebody proposed an idea, that task form should have buttons (with outcomes) rather than mix of dropdown or radio list (for choosing an outcome) and one confirm/submit button (plus one cancel button for closing the task without choosing an answer).
Then somebody else asked if the buttons could be colored in green/yellow/red fashion - for indicating task outcomes that "move forward", "step back" or "cancel" the whole process.
And now, when we create new business applications, with user task forms designed with our corporate UX guidelines book, we have lots of complains about buttons. Now we follow "Primary/secondary action" pattern, with orange and white colour scheme. Users are complaining that "good old 3-color scheme" is best and we should stick to it.
Any ideas how to solve this UX-puzzle?