Thank you for using the Support Forum. Please take a look at this solution for setting up print defaults for black and white and see if this will help in your situation.
If not, we suggest you search our online knowledgebase for this product: WorkCentre 7665.
If you are still unable to resolve the issue please consider contacting your support centre for further assistance.
Be sure to click Kudos for those who have helped you.
Select Accept as Solution for posts that have helped to solve your issue(s)!