This frame is taken from the title sequence of Ernest Symmons' film showing the aftermath of the bombardment of Scarborough.
The frame has been tinted, a fairly common process at the time. This involved the application of a layer of dye, which stained the film emulsion, resulting in the light or clear areas of the picture taking on the colour of the tinting dye.
By the early 1920s pre-tinted film accounted for 80-90% of commercial release printing.