The new Damage colour changes
I'm personally not a fan of the new orange/cyan damage pop-ups, It's been spoken a lot recently in riots team to make "each hit feeling more impactful" or something among those lines. At least they want it makes it feel good whenever you Critical Hit or hit someone, and for me, the bleeding colours of orange and cyan doesn't cut it.
I spoke to the support team when I had gotten a little bit frustrated about Pyke's ultimate sound effect whenever he kills someone, and the midst of the typing i came up with the idea to use legacy colours as you have with the cursor. I've been playing since late season 1, and I personally just love the old stuff that was made, like the old clients rune page.
P.S As I'm writing this I had others asking what I'm doing and they said the same thing, they didn't care about the orange but they really wanted the purple one back. P.P.S How does one remove Pyke's ultimate sound effect