In this screen snapshot, you can see that the colours are quite different. Though the material colours on the sphere have exactly the same parameters. Not only that, the colours of the themes on the left look different too. I never changed these colours.
It rather seems that there is something like a gamma difference between the two.
The blend on the left is based on a 2.49 file. The one on the right is a native 2.53 blend.
Does anyone have an idea how I can correct that ?
Thanks in advance.