values are not update on input value field

[darkworks]

so i checked demo it :: http://lauren.github.io/pick-a-color/

changed colors it demo but new colors values are not updated to input value field

<input type="text" value="fff" name="desktop-demo" class="pick-a-color form-control">

so how to do it , because without its useless as if i have to send color value in form

[darkworks]

on form post , selected color value is submit , just that it run time it now show value change as you change color