Hello, i want to make a multiline listbox, that would look like this. I was searching for solution for a week so i think now is the time to ask for help :( As you see this listbox is so special, because it has two lines per row and those two lines has different colors of course. Does anyone has any ideas or is there a tutorial somewhere that i missed?

This is not a listbox. This is user-component which inherits from a listbox class.
So you need to make your own component, based on a standard listbox.
Something like listbox, which have two textboxes as a one item in it's collection.