For those who do not wish to dye the Cases,you can go to your local parts store,& purchase a roll of Auto body side stripeing,& cover the edge of the case with the color desired,& once in your rack,can be instantly identafied. Great for people who use airtights. Tape is not expensive,& a roll will last a lifetime. Comes in single,& double wide. Have done all my vehicles,& it will not peel off.