Don't forget that your materials must be of airworthy standard and all paperwork must be kept for an audit trail if you want it to fly.
IIRC I was told of the DC-3/C-47 that was painted in D-Day colours and ferried to Coventry years ago had to be scrapped because there was no paper trail to confirm the materials used in the restoration / repair prior to arrival at Coventry were of the correct standard for airworthiness and such no ticket would be issued...
OAW