Am 25.02.2019 um 15:04 schrieb omniverse:
> "cloudyroo" <nomail@nomail> wrote:
>> If I add a blue background to a scene with a grey floor and white sphere I end
>> up with a pretty blue everything (like so: https://imgur.com/a/w9dF3Q1).
>> Is there a way to stop this or another way to colour only the sky/background?
>> Thanks!
> 
> You seem to be using radiosity; if so, try adding the keyword gray_threshold (or
> grey_threshold) to that part of your scene and use a value greater than the
> default of 0.
> It will diminish color transference by that amount as a percentage, 0.5 being
> 50%.

I strongly recommend against using `gray_threshold`, as it has 
unrealistic and probably undesired side effects. Most notably, it will 
desaturate nooks and crannies more than open areas.

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