[Chimera-users] Dim colors in Chimera on OS X 10.10 public beta (Yosemite)

Conrad Huang conrad at cgl.ucsf.edu
Wed Oct 8 13:48:50 PDT 2014

Unfortunately, we have not tested Chimera on Yosemite yet.  It is highly 
likely that there is some OpenGL issue given the images that you are 
seeing.  We will try to get to this soon, but we're pretty tight on 
programmer resources.

If you feel adventurous (which I assume you are since you're running 
Yosemite :-) ), you can try playing with some OpenGL options by going to 
the General category in Preferences and turn on "Debug OpenGL on 
startup".  The next time you start Chimera, it should display a dialog 
where you can selectively turn certain OpenGL options on and off (see 
  If you discover anything, please let us know.


On 10/8/2014 2:31 AM, Jethro Hemmann wrote:
> Hi,
> I'm currently using Chimera on my Macbook running the public beta of
> Yosemite.
> The colors of the molecules appear very dim and they are hard to
> recognize, as can be seen in the attached screenshot. In this example,
> the lipid chains are colored orange, while the water molecules should by
> cyan.
> The colors in the menu Actions --> Color seem to appear with their
> correct brightness, although.
> I also tried the daily build of the alpha version of Chimera, but the
> problem persists.
> Is this problem related to Yosemite? Or do I have to adjust some settings?
> Thanks a lot,
> Jethro
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