Wrong color in SP 3.1

Last week, I install the sp3.1successfully, but, in assembly, all parts in"lightweight" becomes in orange color!!!!Before install sp 3.1, it was OK.
Its was saved in natural grey of solidworks.

This happened withyou?

Thanks
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Maciel Fernando Gabriel. / Brazil - SP
Solidworks 2007 sp3.1
Video: 256Mb / Processor: Atlos 2,0Ghz / RAM: 1Gbz / Win xpsp2