If a color is not available in a certain size, a red (X) will show over a white color circle icon in the product description window. Make sure to click on the size you are interested in and look to see if a red "X" is showing. If the "X" is showing then that color is not available for that size.
Hover over the color circle icon to see the name of the product color. If the icon is white and reads as another color, that means the color for that item for the specific size chosen is not available. Choose another size to see if that color is available. If it is then the color circle icon will not have an red "X".
If there is a color displayed for a circle icon or a white color circle icon that doesn't display an red "X", that means the product is available in the specified color for the specified size.