The ornamental design for a light cover with faux alabaster appearance, as shown and described.
FIG. 1 is a side view of a light cover with faux alabaster appearance;
FIG. 2 is a top view thereof; and,
FIG. 3 is a bottom view thereof.
The glass of the cover is translucent, with irregular swirls formed by lines which are more opaque than intervening regions, creating an appearance similar to alabaster.