You could have used those programmable LED strips that have multi colored chase and strobe features.
Been there done that. I plasma cut this sign out of steel several years ago, hung it on standoffs in my garage above the door into the house. It's been running on continuous loop ever-since. It runs off a 5V wall wart/USB outlet. I have it set where it comes on in one color, slowly dims, switches to the next color, slowly brightens, holds, slowly dims, then switches to the next color....repeat. There might be 6 or 7 different shades it does.
I've gotten a lot of compliments on it over the years. The LED strip had adhesive backing that pulled off and I just adhered it to the back of the steel around the circumference facing the wall...so it backlights the tree. It's about 40-inches in diameter.


