When printing there are several options. Use the Print What list.
When you want to print you have a large number of options.
You can select specific slides by holding Ctrl and selecting the particular slides in slide sorter, then print the selection (or type 1,4,10).
Obviously all the slides a range or just the current slide and number of copies
If you are printing in Black and White you might want to view the slides in black and white. View > Black & White.
This toggles so select again to return to colour. For dark objects Light greyscale is a good choice.
Any changes made whilst in black & white mode have no affect when you return to colour.