Color picker problem with images

[gila]

Hi, i have a problem with color picker, in an attribute with various values clicking those value that have an exadecimal color it's all ok, instead in those have loaded an image i have some problems.

 

You can see the problem here:

 

http://www.trovarredo.com/working/index.php?id_product=787&controller=product#/-

 

Click on the first 9 square colors then on the tenth and you'll notice the bug, form the tenth start those have an image instead of exadecimal value.

 

i use presta 1.5.2 with the defaul theme.

 

Wath can i do?

 

thanks