Color Toner Use - MF753Cdw

[Printer123456]

Hi.  I got my new printer yesterday (MF753) and it is already showing 90% remaining on the color cartridges.  I have printed very little color, but I did make about 150 copies that were "color" even though the majority were black and white.  does the color toner really get used up that quickly if most of the pages are B&W?  what about if i print in color and it's very minimal, it's almost like the printer was using color toner to print black and white, instead of the B&W cartridge.  hopefully this make sense to someone.

[bwatson23]

Just realized that mine is doing the exact same thing except I've printed off 3 photos and roughly 200 B&W documents and for some odd reason all 3 colors have dropped 10% but the black is still showing 100%. So if i didn't know any better i would think that it's using the colors to make black text.