I've never seen this before

My parents bought this house 30 years ago and I moved back here and back into my old bedroom just over 18 months ago. In my bathroom ceiling there is a Velux window which I am far too short to see out of. But if I've discovered that if I hold my camera at full stretch I can take a picture...

The rainbow was a complete, and very lovely surprise. Chuffed to bits.

This is SOOC because I can't see any way to improve it really :)