Implemented Strategy Pattern within HelpersLib

Pulled the SetBoxMarker, SetSliderMarker, GetBoxColor, GetSliderColor
from ColorUserControl.cs  Placed them in iDrawStyles interface and had
the six draw styles classes made (Hue, Saturation, Brightness, Red,
Green, Blue) to implement them. An instance is made in ColorUserControl,
and is used to remove the switch statements from the functions that were
pulled to he interface.