C6150 - how to make it a black and white only printer

[abhsee]

I have the C6150 all-in-one printer - it keeps running out of color cartridges even though I rarely use color printing.  I want it to ignore the status of color cartridges even if they are empty.  I set my printing option to say "black cartridge only" but it still doesn't allow printing and given an error message that "Replace the following empty ink cartridges to resume printing" - why does it need color cartridges to print in black when I am explicitly specifying it to use "Black cartridge only" in my print option?  How do I make this printer a black and white only printer and igonre the status of color cartridges?

[Memawgl]

I have that happen as well. I have it set to print black only and it is still using color. Haven't a clue why!!!