THX for your suggestions but I am very busy this week and I will try to change the court next week.
You may post a pic of what is in your mind ............?
Here's an image with that clearly shows the solid blue color scheme of the baseline wall for the nineties AO. It also shows the lack of logos besides Ford and the 'Melbourne' marker in the middle of the wall:
This is a court with a similar court color scheme as nineties AO (just the court itself, not the walls), but it's a bit darker. The court inside the lines is slightly scuffed in this one (just like the actual nineties AO court) whereas in the third AO court above (the one I've been referencing), the court is only scuffed outside the lines; inside it's unnaturally smooth:
This video would be best to work from in order to make a day court under bright sun with shadows on the wall. I didn't use a still from it earlier because the shadows make the true color scheme of the baseline wall hard to make out. It also shows that there are no logos on the court itself (including the chair) and that the marine blue of today's AO is nowhere to be found on the court: