91121 and its set of East Coast liveried stock blends almost seamlessly with the grey sky as it heads north past Frinkley Lane crossing near the former Barkston Junction. Photographs like this on grey days with very flat skies need a fair amount of work in Photoshop to make a reasonable finished product. Like is so often the case and as described in stage two of
https://www.ontheupfast.com/technical-notes the sky is selected and worked on before the rest of the image is tackled.