Epson Inktcartridge T054940 blauw, Blau, Tinte auf Pigmentbasis

Usually I buy high-quality clone cartridges, but I have noticed with the (new) drivers under Windows 7 that my R800 now prints significantly lighter (unsaturated) colors. When I switched back to Epson (OEM) cartridges, it prints fully saturated colors and they colors are much truer to the screen (RGB) colors. I suspect this may be a driver behavior since the driver knows when the cartridges are not OEM.