As it is currently implemented, the new Revit 2024 Dark Mode UI has white text on a grey-blue background, this means that when searching for matching text in any drop down menu with this dark mode implementation (as shown in the examples below) the dark yellow highlight colour makes the white text almost impossible to see.
This is not very user-friendly and needs to be changed.
Example 1: Reference Other View Search.
Example 2: Structural Connections Search.