Gorgeous kite - and magnificent workmanship!
From the 4th FG geek desk: I could look it up to be sure of the exact dates - been a while - but FWIW the 4th applied the red nose paint over the "ETO white" noses roughly March 15th. The 4th (this varied group to group) painted out the vertical AND horizontal tail white ETO stripes roughly March 23rd, thus leaving only the white bands on the wings + the red noses + the code letters as ID markings until the first NMF Mustangs arrived ~May.
Based on that, the plane is correct in terms of the red nose with white tail bands appearing at the same time, though only for that short period of time. Yes, I know the family(?) wanted "Boise" added to the nose art even though Beeson's Mustang evidently didn't carry it. No problem here. The April 5th scoreboard, I take it, is a composite feature which falls outside the March 15th - 23rd as-applied markings timeframe. Again, understood, and despite my well-known and documented "geekdom" in regards to the 4th, I have no problem with them doing it this way.
My only real 'geek nit' would be that the serial number is the wrong "font". The typical 1944 P-51 serial font was noticeably thinner.
The "original" BEE displayed a healthy mottle look to the paint job which was pretty sloppy looking - I can understand any reluctance to replicate that! This was due to the panel line shipping tape, when removed, in many cases pulling off paint down to the aluminum in at least the first batches of Mustangs delivered to Debden. Some un-touched up planes looked terrible even though they had been on ops for only 2-3 weeks when pics were taken. Beeson's was in fact touched up with one or two different shades of green as the 'famous' April 5th photo shows.
Thx for the pix, Jack!