How to set color manually in colorpicker eyecon?

I am using colorpicker eyecon in my project and i want to set the color manually but when i do that it is set to black color (#000000)

I use .colorpicker('setValue', value) method

This is the documentation of this plugin http://ift.tt/1AenZgP

That's my try :

$("#button-color").colorpicker();

$("#button-color").colorpicker("setValue", "#ad4747");