I too like the colour ones better and the PP you have used. I suspect the sky just wasn't moody enough for the B&W to bring impact. Did you try simulating a red filter in PP? The gate might work well in B&W though and I love that last one. Super composition.
Thank you Pete. I had almost forgotten about red filters, shall have to have a play with that, thanks for the tip. Did look at the gate in B&W, but I like the way colour of the sky works with the door.