Revert "replaced the Paint and PaintConverter to Color and ColorConverter..."

This reverts commit 888d890a8bbe09809bf6c28fcc35b16842add977.
delambdafied builders again due to some problems
Used deriveColor to create barBorderColor instead of calculating the new Color manually
Experimental approach to set colors by using setBackground(BackgroundFill, null, null) instead of using setStyle()