I am the Lead developer on the jQuery UI Month Picker project.

https://github.com/KidSysco/jquery-ui-month-picker

The jQuery UI Month Picker Plugin is designed to be a version of jQuery UI Date Picker which allows user input for only a month and year when only that input is required.

Our goal is to be as visually consistent as possible with the jQuery UI Date Picker.

In order to make the plugin look consistent with Date Picker I created a .ui-widget-header that has next/prev buttons with a transparent background (just like date picker has).

See the demo:  https://kidsysco.github.io/jquery-ui-month-picker/

I achieved this in jQuery UI 1.11 and under by using a standard jQuery UI button and removing it's .ui-state-default class.

This hack no longer works in jQuery UI 1.12 (since button doesn't have .ui-state-default anymore).

I was wondering if can discuss creating a public API for transparent buttons in a .ui-widget-header