Imported color skies turn black and white in Photoshop Sky Replacement

I imported today 13 skies shots that I took this morning.  The skies had bright pink and orange clouds.  I imported the raw files into LRC, did some minor edits in the main editing panel to mostly to brighten each raw image and then exported them into a folder on my harddrive each as a DNG file.   In Photoshop I went to sky replacment, and clicked on the icon to import new skies. The new color DNG show up as  black and white skies when they are imported into the sky replacement module.  Is this a bug or am I doing something wrong or accidentally clicked some setting that turns them black and white.  Thank you for any assistance on this.