that last picture ( reflection) is what "I" was ASSUMING the OP wanted....
I have had that additional awning on 2 of my RV's and the additional covered area is awesome!!! NOT a traditional slide topper, has nothing to do with the TOP of the SLIDES....
And to touch on the black awning and heat.... the awning does not add any additional heat to the shade area under from I can tell...
I wonder if the original OP wants to clear this debate up or not?
Slide topper or awning.... 2 very different animals...