Yeah, to be more precise the whole property is
7F 09 00 00 CA 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00 00 00 D9 D9 D9 FF 00 00 00 00
With the D9 D9 D9 FF being RGBA.
So if you're doing a tutorial make sure to include the rest so someone doesn't replace any other grey that matches.