Create a P (paragraph) element, and set up your code so that when any key is pressed, that element's text will be changed to some other text ("You've pressed a key" is a good string to change the element to :) )
Figure out (using that other page) the key that corresponds to the 'r' key, and to the 'g' key. When the 'r' key is pressed, change some text to be red. When the 'g' key is pressed, change it to be green.
Extend the previous example, so that if the SHIFT key is down, you'll make the text BRIGHT red/green. Note that the text color shouldn't change if you only press the SHIFT key.
If applicable, add this feature into your game (A4)