I'm surprised! I've looked at swatches, and it seemed that Porcelain was darker than Nars Siberia. I'm NW7 (more like NW10 lately, but it's because I had not anticipated the sun would be so strong!) I'm not too sure about buying something before trying it, but I was expecting Nars tinted moisturizers for spring (that's what they announced) and it's been pushed back to 2012. I've heard such great things about Laura Mercier's Tinted Moisturizers!