Hi Lelask, unfortunately Little Math doesn't have a Print function yet like the one you have in Little Reader. What you can do for now is to take screenshots of your LM slides (during playback), then paste the images into PowerPoint or Word, and you can print them out from there. The printout color settings can be customized via PowerPoint / Word's Printing Preferences option.
Alternatively, you may create your own flash cards without doing the screenshot method I mentioned above by using the icons from your LM and inserting these in your document or slideshow (just like how you use clip art). You will find the icons' image files in your "My Documents \ BrillKids \ Little Math \ Media Library" folder -- as a precaution, please copy the LM icon you want to use and save it in a separate location so that you won't accidentally delete or rename the icons used by Little Math.
Sorry about the inconvenience, but I hope this helps!