CSS to stop WYSIWYG editor buttons in Toolset forms from inheriting bg colours from theme

/* button background colour */
button:not(.toggle), .button, .faux-button, .wp-block-button__link, .wp-block-file .wp-block-file__button, input[type="button"], input[type="reset"], input[type="submit"], .bg-accent, .bg-accent-hover:hover, .bg-accent-hover:focus, :root .has-accent-background-color, .comment-reply-link { background-color: #eee;}