I’m really sorry for my previous post, i was just wrong.
You can change the colors of the states, you just need to go under the Left Panel “Assets Details”
And under theme, you can find the options to add new colors, then you just assign that color to any State from the right panel.
For the Debugger, it is way better in 5.5, and you actually can zoom on it, you simply need to hold CRTL + mousewheel.
I was also probably doing something wrong with the jump to next and previous keys, because now that i fixed my states transitions, i can properly jump to each keys.