Mozilla 1.5+ and IE 5+ don't handle the coloring of drop down boxes the same. Notice when rolled up there is no display of the color setting in Mozilla 1.5, which makes the no names verison unusable. This new style chooser is only really good in in IE. Konqueror and Opera do not show the colors in the dropdown at all.
Image from Mozilla 1.5:
Image from IE 6: