The box shadows created rendered in IE by CSS3PIE Show archive.org snapshot look darker and are blurred differently than in browsers that render box-shadow natively.

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If possible, try to be OK with this. If not, make an IE-only stylesheet that uses a different color and blur radius:

// Real browsers:
+box_shadow("0 4px 10px #bbb")

// IE with PIE:
+box_shadow("0 5px 15px #888")

We should try to package this solution in a neat way so we don't need different stylesheets.

See also this cross-browser box-shadow comparison Show archive.org snapshot page.