I use Internal render of Blender.
When I created a grass by particle system it suddenly became PURPLE, despite the fact that the material was assigned of grass was green.
Help me please understand the reason of сhanging colors!
One of the texures on the grass material will be mapped to col, using the default colour which is that purple shade you have there.
Nice scene by the way.
To find that color option, under the texture controls you will see the texture/map input/map to tabs. Click Map To tab and you’ll see from there how to change it.
Thank you very much for your advice!
They helped me a lot.
In fact, the problem was in the system of particles.
The texture assigned to material was fatally inverted.
Apparently just need to invert the texture: map to -> inv
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Indeed, interesting-looking project. Please. keep us informed of your progress.
yeah, it looks really cool.
I feel you should keep them purple, they are beauty.
Thank you very much for your feedback!
The purpose of my project is to create within the cold concrete boxes of modern urban buildings of the natural environment suitable for human habitation, so I try to avoid direct use of synthetics materials and unnatural colors.
My main problem is that the bright textures and materials of why become pale with AO rendering.
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Nice interior design,I would love to live in a house like this! 
