Touchscreen GUI, and some other helpful things

Also a set of duplicated Graphics functions with "2" appended (e.g. fillRect2()) that can be used in place of the standard functions, but allow for the inclusion of a color parameter to set the drawing color.

Why not create a pen object that you set the colour on, and then call the same function with the same arguments on that object. It's constructor could take the lcd as as a param and a colour.