Oh! I recognized that window from that Karneval scan right away. Probably because I walled it myself, lol.
I was about to wonder and ask where the 'yellow' was in all that before I saw the other version and clicked on it. Not sure why it's also monochrome in the thumbnail but I really prefer the colored version a lot more than the monochrome one. Not that the b&w looks bad but the combination of colors in the other version really pops out more and makes it all more vibrant than the subdued, more melancholy monochrome one. The sky is simply gorgeous. Nice vector, too.
Keep up the good work!