I am working on a video that has a few photos in it. One of them has space on the left and right of the image. Is there a way to make the background color white where there is just blank space? Right now it is black.

Photos on video track 1
Color clip (Project>Add Color clip) on Video track 2
Affine transition between the two.

That was so easy. I don't know how I missed it. Thank you!