Fairy light help needed

[birdling]

I'm looking for some tree lights that have a mode where the red and yellow lights are on together, then the blue and green together. I used to have a set, then they broke and the next set I bought had red and blue on together, then yellow and green together. Doesn't have the same feel at all!
I need to find a new set.
Does anyone have a set that do my preferred combination?
What are they?

Sorry, I know that seems completely frivolous, but the red and yellow have a lovely warm feel, and the blue/green feel all icy. I love it when they alternate