Greek Gift (Bxh7) Sacrifices

This second sacrifice may noy have been sound, however, it worked partly thanks to my opponent.  Any thoughts? 
On the openings, in both games I played the Colle-Zukertort opening which I find lends very well to attacking play because of the two bishops aiming at the kingside, and the possibility of placing a knight on e5 (possibly in conjunction with a kingside pawn storm as in the first game.)  If black castles queenside the white can switch his play to that side of the board with c4.  For a more in depth coverage of this opening see my Blitz/Bullet Chess Openings blog post.