ffap; prompt turns color misleadingly

[jidanni]

$ emacs -Q file_with_url_in_it
Put the cursor on the URL, do M-x ffap.
Now add some slashes at the end of the URL. The preceding part of the URL
changes color, making us think that we are now just referring to the local
file system as the usual shortcut: /wrong//right, but in fact it is all
appended to the URL anyway!

Also please use a third color for the "http:/" and "ftp:/", or use the
same color as the rest of the URL. Currently you use the "discarded
text" color, which is not exactly right, as it is indeed part of the
URL.

Emacs  : GNU Emacs 22.1.1 (i486-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2007-12-15 on noname, modified by Debian
ffap-version "1.9-fsf <97/06/25 13:21:41 mic>"
By the way, the date 97 is worrisome, although the ffap.el says
copyright 2007.