- Clouds are set to stratus and
- Pixel shaders are on and
- The airplane has an OBJ that uses ATTR_diffuse_rgb
This is simply a bug in the shaders (which is failing to apply the diffuse tinting to ambient-only lighting conditions); I have a fix, but I'm not sure how soon it will be released. We will probably do a small bug-fix release with this and one or two other things, but this is yet to be finalized, since Austin is out of the office this week.