red/green anaglyphic ghosting

[Jeff]

What type of background were you using before the dark brown? Generally a black or white background is used. When you use a black background you will see the red dots with the red filter and the green dots with the green filter. When you use a white background the green dots are seen with the red filter and the red with the green filter. Perhaps the effect of the ghosting is reduced more with one or the other.
Two major factors that contribute to ghosting are the spectral content of the light coming from each dot and the spectral filtering by each filter. Ideally, in terms of reducing ghosting, the spectral output of the primary colors will not overlap and the the filters will only allow light from the appropriate dot through. So, reducing ghosting means having a good combination of display and filters.

Here is a link to a paper that goes into the topic into some depth.

http://www.cmst.curtin.edu.au/publicat/2004-08.pdf