Hi Arith:
In this case the "litter" if you are refering to the boxes and stand at the bottom are unavoidable, and I don't think you can clone or crop them. My comments did not refer to croping because of distracting elements, although as you've noticed unwanted little bits are a pet peeve of mine.
I love this photo, it's a beautiful catherdral. I like the tone of the B&W and to answer your original question, Yes, colour and B&W do go together. There's just something about the colour being at the outsides instead of the centre that pulls my eyes apart. That was just an initial reaction though. Generally I love the photo and the colour enhances it even more. It's just in my nature to always want to try something else.
I still like the original the best. I don't like the one you did with just one window in colour, and cropping into 2 seperate images spoils it also. I'd really like to see it if you could colour the pulpit and stairs along with the windows though. Is that possible? This is the kind of work I would like to be able to do in the future, so I'm just curious if it can be done.
Wendy