You cannot print images in colour by using the File ->Print command.
However, there is a way around this. Set up the screen so that it shows the image you wish to print out. Choose File ->Export as Image. This opens a window which allows you to save the screen as a graphical image. The bottom left corner of this window has a dropbox which allows you to save the image in several popular formats, such as a "jpeg" or a "pict". Once you have saved this image, you can open it a program such as Internet Explorer and choose File ->Print to print out a colour image