Funny enough, it reminds me of Brandy's 'Right Here' conceptually and Brandy's 'Long Distance', visually. I like it though, its really simple but great. She looks really beautiful on the rooftop scene.
I liked it. Very simple but touching. As you said, it was similar to "Long Distance" in that it started in black and white and became color, but it was also similar to Right Here (Departed) in that it spoke of being there for someone in their time of need.