There are a few problems with scrollbars when used with Swing's GTK L&F and the
Nimbus theme on Solaris:
  1) The top and left buttons have an extra border on the top/left side.
  2) The bottom and right buttons look okay in the normal state, but are not
     rendered properly for the rollover or pressed states (they just look like
     the normal state in those cases).
  3) The scroll thumb does not align properly when positioned at either end of the
     trough (it appears to sit above the end of the arrow button).