I learned something new about double rainbows.
"A double rainbow occurs when the light undergoes two reflections inside the raindrop instead of just one.
In a double rainbow, the lower arc is the primary rainbow while the higher, fainter colored arc is the secondary rainbow.
The color sequence of the secondary arc is opposite to the primary one; red is on the inside of the arc and violet is on the outside."
https://www.mlive.com/news/ann-arbor/2026/05/watch-a-rare-double-rainbow-appear-over-ann-arbor.html











