If you want to print in colour on your Mac but it comes out in Black and White you may need to change the setting when you print. Black and White is the College default so you need to change every time you print. Please do not set colour as your default.
Once you click print you should be met with a screen similar to this:
Click on the app name (Preview in this example) and choose Image Options or Fuji Xerox Features if Image Options isn't there.
Then choose "Color" (sic) from the list. Then click Print.
You could create a preset to save having to do this every time.
Click Presets > Save Current Settings as Preset
Name it Colour
Then just choose it from the Presets list when you wish to print in colour.