Event handling in applet classes will be updated as they are re-written using the new VanderApplet setup. To change the entire scheme, just re-write VanderColor. Graph Canvas now owns its colors - bgColor, axesColor and gridColor. The last two are passed to the Grid classes. This allows us to re-do the GC color scheme all in one place.
Functions still own their colors.
Also, a new class, VanderColor has been added to try and centralize the color scheme. This involves different colors for input areas, output areas and panel background areas. I will migrate the GC colors into this class as well so that all color specifications will be done in a single file. The Newton's Method applet. Approximate zeros of many functions with this applet.