[JavaScript] Mobile color picker

The current color picker on the web control panel makes use of the HTML5 color picker input which isn't support on most mobile devices.

I would like to have a color picker implemented on the fixture control page that supports mobile.
Further, the color picker should update the fixture color as the picker is selected (before mouse/finger release, before submit etc).
Additionally, the picker should still allow users to type in their own custom hex value character by character.

Preferably, this should not use jQuery as the site currently does not use it.

まず fixture のコントロールページと現在の HTML5 カラー入力を見つけ、次に picker の変更がどのように fixture の色へ反映されるかを追跡します。モバイル対応の picker が選択中に更新され、カスタム hex 入力を1文字ずつ受け付け、jQuery なしで動作すれば完了です。