forms.highlightColor

Sets --ks-field-bg, the tint drawn over fillable fields; the hover shade is derived from it. A hex, a name or one color function, like theme.accentColor; anything else is ignored with a warning. Leave it out to keep the SDK's own tint, or set --ks-field-bg (and --ks-field-bg-hover, which the option derives for you) in CSS instead.

forms: { highlightColor: '#fff3c4' } // a warmer field tint