Save your file either to your computer, or to an online service like SkyDrive. Then find out how to share it with others, even if they have an older version.
Save your PowerPoint 2013 presentations to SkyDrive.
Use PDF or XPS format to help preserve the formatting in your file or to share the file with other people.
Save your presentation so you don't lose all your hard work, then print it to share it with others.
I have Powerpoint 2010 installed, Windows 7, 64-bit. Other products (including MS Word) print in color just fine. All settings in Powerpoint (options and print dialog) are set for color. I can save as