Good morning. We'd like to replace our current light with a pretty LED light, and my head is spinning with the choices and range of prices. I don't know where to start. Our niche opening is 4.5" wide and 5.5" deep. The light is 5.5" wide and about 5.5" long (see picture). How can I determine what light will fit into the niche, be a color-changing light, and preferably be controllable from a remote? There are no other markings on the light to tell what it originally was.