Yes, the results of the reports are printed in colour, but your browser does not print that part of the report by default.
To do this : In the Tools menu, select Print and Page layout… Make sure the “Print colours and background images” option is checked.
Google Chrome : in the Settings menu, select Print… Then click on “More settings” Make sure the “Background graphics” option is checked.
Firefox : In the Options menu, select Print… Then, under the new heading, click on the “Page layout” button… Make sure the “Print page background (colours and images)” option is checked.