Loosing vivid colors with dome light Vray renderer?

Hi,

If I have clouds image in my Vray dome light as dome texture the scene colors are getting rendered as a slightly dark and objects are pale. But I want all them to be as vivid color as they are in editor. It is obvious that radiosity, GI, etcc are interacting with object in scene but is there a way to get the colors more vivid ?

Regards,