Product available with different options Versele-Laga Versele-Laga YEL-LUX Versele Laga spcv109 €6.20 Yel-Lux is a natural yellow dye-based carotenoid lutein. This dietary supplement intensifies the yellow plumage and increases endurance. Since feathers consist of dead cells, and therefore are not fed through metabolism absorb color when formed. View