Why are there so many ....

..... songs about rainbows?
We took the dogs to New Aberdour beach today where we saw this.
We also had a chat with a couple of cowrie collectors, a father and son. They have thousands of the little shells. I have a few hundred. We agreed that it is very therapeutic looking for them but I’m not sure why.
I miss The Muppets ( although I never liked Miss Piggy much!)