My bad, false assumption on my part regarding the red checkers, I'd still say your colours are correct. Not sure about the drop shadow being below the red though, the traces of a border line showing where the red has worn away appear to be above and to the right of the red. That might be a black drop shadow or part of a black outline that goes all the way round the red.
Yes Arlo it is rarely the case we get a colour photo or an eyewitness account for confirming these things so there's often some educated guesswork involved. I am always suspicious of secondary sources of info though. I have run across cases of aircraft that have been modelled, skinned, drawn, profiled or painted umpteen times over the years with a shared obvious mistake or that I know never even existed in real life. The first artist made a mistake or used a bit of imagination to make an interesting scheme and then all the rest just copied it without doing any research.