Firefox ignores Generic RGB color profile embedded in images.

The following three images are, from top to bottom, without embedded color profile, with Generic RGB color profile embedded, and with sRGB color profile embedded.

Ideally the three images below should look different (a reference rendering can be obtained by opening the test case in Safari), but Firefox seems to ignore the Generic RGB color profile embedded in the second image and renders the first image (without embedded profile) and the second image (with Generic RGB profile embedded) identically.

The bug is reproducible using Firefox 3.6 and Minefield (Firefox nightly builds) (The bug is still present in the following build: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6).

Untagged (Device)
Generic RGB
sRGB