How to improve on Farsight ball visibility

This is an advice of my friend Doc/Nick. He noticed that playing Big Shot with the 8-ball custom ball does improve visibility. He suggested that I try it and so he got me experimenting. I started with the same ball but then a new series of custom balls were proposed, along with season-three tables. Most of them have some ridiculous decoration but there is one black ball which looks jet-black in the menu.

I started using it in my favourite test case, Big Shot

and I noticed two things. First, the visibility is definitely improved. Second, the ball is not uniformly black: it has the reflections that are making the standard ball almost a chameleon but the black overpaint dominates. 

The second test was the “unplayable” pinball, White Water

Here the black ball was of no help at all, and so I started experimenting with other colours. I found that a green ball has the better contrast and does improve the game a little (but unfortunately only a little bit).

El Dorado, the city of gold

with the over-ornate, multi-coloured, table poses a serious problem. I tried a blue ball and a red one but none was really satisfactory. A uniformly white one would probably help but Farsight prefers to offer balls decorated with graphics from the various tables rather than a ball which would improve playability.

Update 
As a matter of fact a white ball does exist. Perhaps I am too harsh criticising Farsight.

The final test was the Creature from the black lagoon table

Here again, no really satisfactory solution was found. A yellow ball does help a little but not to the point one would have liked.

Clearly more experiments with balls are necessary in order to optimise the combination ball+table. (It goes without saying that any feedback would be precious).