When composing an email in the email editor you can add a button to the email. I want to change the default button color when it is added.  I have tried adding CSS to the Email Template, and that only works with the !important added and when I do that the button color can't be changed as the !important style overrides whatever is selected.  I suspect there is a config file someplace that I can edit that specifies the defaults for the attributes tied to the button.

Thank you,

Stuart