<form>
<input class="bg-gray-200 hover:bg-white hover:border-gray-300 focus:outline-none focus:bg-white focus:shadow-outline focus:border-gray-300 ...">
<button class="bg-teal-900 hover:bg-teal-600 focus:outline-none focus:shadow-outline ...">
Sign Up
</button>
</form>
<form>
<input class="bg-gray-200 hover:bg-white hover:border-gray-300 focus:outline-none focus:bg-white focus:shadow-outline focus:border-gray-300 ...">
<button class="bg-green-500 hover:bg-teal-600 focus:outline-none focus:shadow-outline ...">
Sign Up
</button>
</form>