Thanks Eli! I confirm the fix in eldoc hints and isearch prompt.
Closing this bug.

On Fri, Jul 8, 2016 at 3:50 PM Eli Zaretskii <eliz@gnu.org> wrote:

> > Instead of "Isearch: " showing in a different face than that of the use
> input in the minibuffer, "Isearch: " prompt
> > + user input search string showed up in the same face.
>
> Ah, okay.  Then this is also fixed.
>
> --

-- 
Kaushal Modi