Fixed Json colour reader - Fixed bitwise operator to correct values and ensured cast to an int to make sure the correct constructor is used
Fixed colour timeline to cast to int to ensure correct constructors called for Color.  Also ensured we alter the actually slot.color and not just create a local copy of it.
Fixed creation of default colour objects to be 'white' - i.e. call with correct parameter type. 1f = 255 int.
Now using correct colour when daring our images