So the best workaround is to not change the systems color settings while remote controlling that machine. That doesn't sound to hard to do.
How you can say: that is a bug of Leopard ? there is any other product that works ?
How can you say it is anything other then a Leopard bug when with a vanilla install of Leopard without LANDesk or any other applications added to it the problem can be produced?
So - from this then, at a guess, the bug is whatever mechanisms we use in Leopard to "grab / paint" the RC-screen?
If this is the case, and another product doing RC is not affected, I would guess that said other product uses different methods / system calls to grab their image / paint it. Just turns out to be that we got "unlucky" in this case then, as whatever bug was introduced affects us ... might as well have been the other way around.
LANDesk EMEA Technical Lead