Paint for "weichenhebelen/point levers" tips needed please!

All-

For the point levers in Germany and other parts of Europe, I have seen them have on their "ball" a combination of black and white.

Now, I assume one way shows that a train can procede, but shows against the point from the other way, or possibly the direction of travel?

Link to what I am talking about:

http://www.bahnarchiv.net/gallery/main.php?g2_itemId=52576

or

http://www.buntbahn.de/fotos/data/500/86weichenhebel.jpg

I plan to replace all the LGB point controls with the ones sold by Heyn, and need to know how they are to be painted.

Thanks!

Ah, found this!

http://www.buntbahn.de/modellbau/printview.php?t=6273&start=0

Now to get an order together to Heyn!