Hi @Anonymous
I see that you are visiting as a new member! Warm Welcome to the Autodesk community! 
As suggested by @ToanDN and @ennujozlagam the image can be changed to 'black and white' using image editing software:
Adobe Photoshop
Irfan view
Photoscape
movavi photo editor (classic black and white images)
fotor
Within Revit you can insert your image as a decal, but that does not make it 'black and white' though you can modify the settings see below:

Please see print settings in Revit HERE
As suggested by @ToanDN you can print in monochrome as:
- Black Lines: All text, non-white lines, pattern lines, and edges print in black. All raster images and solid patterns print in grayscale. (This option is not available for publishing to DWF.)
- Grayscale: All colors, text, images, and lines are printed in grayscale. (This option is not available for publishing to DWF.)
If you find posts have solved your problem, please click on 'Accept as solution' to help others with similar questions. Kudos welcome!