Poser 4 ... the render engine wasn't quite as advanced ... have you checked all the lights in the scene to make sure you don't have one set to orange. ... also check you texture pop-up and look at the settings there.  It could be a combination of two lights causing an odd glow.  Since I haven't used Poser 4 since 1999 ... I don't know what else I can add.

Boni

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"Be Hero to Yourself" -- Peter Tork