I'm guessing he probably would have rationalized it anyway:
'Ye gods! The rays have dyed my uniform in stars and stripes of blue and... green? But wait! Last year, when I was taking a tour of the White House grounds, I saw a delphinium in just these colors! It's a sign! I shall become... THE PATRIOTIC DELPHINIUM!'
'My word! The rays have dyed me in stars and stripes of brilliant orange and purple! It's a sign! I shall become the... uh... hrrm. Aha! I have it! I shall become... THE AMERICAN SUNSET!'
Never try and stump someone who's REALLY determined to be a superhero. He'll find a way.