Hi everyone!
Over the last couple of weeks I experimented a bit with shaders, and ended up with some nice, gently moving and not too distracting backgrounds that float behind the tennis courts. Each court type (clay, grass and hard court) now has its own floating background, matching the colour of that court surface.
In addition to that, I implemented mouse-over animations for all buttons in the game (except for input fields and buttons that open drop-down menus). Hovering over a button is now more enjoyable, as it not only changes colour but also increases in size once the cursor touches it.

Other improvements:
- Replaced the net in the center of the court, which was previously just a single rectangular shape with weird looking transparent holes in between, with individual cylindric shapes. It now looks much better, especially when zooming in from an angle.
- Replaced large court surface textures with separate, smaller and square-shaped textures. This allows for higher resolution, which again results in better looks when zooming in, and reduced texture sizes.
- Added a slight, permanent wobble effect to target fields, to make them look less static.
- Some minor improvements (tennis court lights and shadows, robot surface materials, camera zoom in robot setup menu).