Rendering help with colour change!

[Rossy22]

Can't figure out why the colour of the conservatory has this yellow tint added to it and is alot darker than the material ive used on the actual drawing, all the other materials are fine! the mateiral should match the ligher colour on the roof of the conservatory. any help would be great thanks

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[valerostudio]

It looks like that darker color is that crappy tan default material color SU applies to faces. I would make a new material and make sure to re-apply it to all the geometry.