Thanks all, for such kind words, esp. Rod's ":^D Debi, thanks and no polarizer. Converted from the RAW file in Adobe Camera Raw. It has 8 by-color sliders for rendering color and in the conversion to B&W for darkening and lightening, by color, I love it! IMhO, it makes all those on-lens filters obsolete.
The first thing that popped into my head on why this shot fit the opposites theme was that water always seeks the lowest place and these clouds are "reaching" for the highest place. After I posted I came up with more, added to by "optical" opposites (thanks to Sharon ";^).