Main Drain Cover

Hi everyone! First time posting but can honestly say I’ve learned just about everything I know about my pool on this page. Wondering if there is any way to tell what kind of main drain cover will replace the one in this picture with just the picture. We are getting a replacement liner and I’ve been told by the people doing it they only provide white covers and faceplates. We want to go with gray because we’re going with a darker liner, so I want to try to find gray ones and provide them for the replacement. Any tips that can be given with just the picture? Thanks in advance!