Password field border color

Hello,

Made a registration page with two password fields. When typing in one of this password fields, the border changes in red.

I trying disable this, but can’t find the related classes for this fields.

Trying this, but don’t unset the border color:

.um-form .um-field .um-field-area input.um-form-field.um-validate-not-matched, .um-form .um-field .um-field-area input.um-form-field.um-validate-not-matched:focus, .um-form .um-field .um-field-area input.um-form-field.um-validate-username-exists, .um-form .um-field .um-field-area input.um-form-field.um-validate-username-exists:focus {
border-color: none !important;
}