Color, Black and White, or Both?

Windows.

They all have a different look.  Here is a set in from Fallon, Nevada.  A very old abandoned home.  In this first shot I pushed the saturation and Vibrance.  Getting the blue hues in the shadows and the deep red on the window screens.

The Black and White is a simple conversion in Silver Efex Pro.

And this one is the same as the Black and White but did a gradation on the first layer (background).   Erased through the third layer (Silver Efex Pro) to the second layer (original saturated color layer).  I also put a shadow on the title.