border or drop shadow on videos

I think a border or dropshadow option on videos in Rise would be useful.

For videos with a white background first frame, it's hard to see the difference between the video and the page (see embedded image below 'video on white').

I currently change the background for the section, but that doesn't always look good (see embedded image below 'video on gray').

Having a grey/neutral border or a drop shadow or something which let's you see the video frame would be a more visually pleasing option.