Nice job, Brian, but if you want to sell it as RAF the surround should be light blue, the scroll gold, the middle field white and the title Squadron....
Think you're referring top the colourful squadron marking used during peacetime between the wars and after. Probably not something you need to worry...
I suppose you could do that in the last turn on fire though as you're not planning a straight that turn. Just hope you don't get another fire before...