Thanks to both of you!
The image should be black & white when the mouse is not on it, then colour when the mouse is hovered over it. See the attached pic where I had my mouse hovered over the image of my face. There should be no text on the image, just the social media sharing buttons with the text being under each of the images.
So if yours it not changing to colour then I would say there is some reason it's not picking up the second image I uploaded. Strange!
Loving it, thanks. Miss that beautiful boy!