Here's last Wednesday's picture, fromL-Squared:
And this is what it was cropped from:
Rainbow off a CD :-)
Four of you knew what this was!
First was SisterAE: "Hmmm. Is this something reflecting on a CD or DVD?"
Next was Michele R: "I think it is either a CD or a DVD."
Third was Wil: "I say it is the back of CD/DVD that is near some lights, maybe Xmas tree lights"
Lastly, Sunfire said: "I see pretty colors like that when I leave my CDs and DVDs data-side up..."
A couple of you flashed back to the 60s or 70s, if you know what I mean ;-)
What is it?