jQuery - change background color textbox on change by Norlihazmey Ghazali
http://stackoverflow.com/questions/32265271/how-to-set-select-box-value-change-to-textbox-color-change/32265357#32265356
HTML
<select id="color">
<option value="Black">Black</option>
<option value="White">White</option>
<option value="Blue">Blue</option>
<option value="Green">Green</option>
<option value="Orange">Orange</option>
</select>
<input type="text" name="color" id="color" value=""/>
JavaScript
$('#color').change(function(){
alert($(this).val());
$('[name="color"]').css('background',$(this).val());
});