Bugs fixed Feb 27 - kp:

  When an image is placed over the palette, mouse focus
  should be on the image, rather than the palette.
  (Draw11.mouseDown)

  Palette should not pop up when mouse is over an item,
  rather than the background.
  (Draw10.mouseMove)

  Mouse hovering over color palette should highlight
  the potential color selection.
  (Draw6.mouseMove,Draw6.renderFg)