I have an epson stylus cx5000 and in print options, i choose BLACK INK ONLY but i always notice the color cartridges going down, even though i only use it for black ink. I dont see any color ink coming out but i have to keep replacing the color cartridges! is this some epson scam? HOw do i fix this? I only want to use black one cartridge for black, one for red, one for yellow, one for blue and i already did the "black ink only" but over a couple weeks the color ones go down too.