Or the other way of thinking about it is that the lack of colour opens up all those wonderful opportunities for dramatic images that are about line, shape, tone and texture, which is what you've been doing in this series of images.
I always feel it's hard to give detailed critique on images when there are, as in this case, 11 in the series. Suffice to say that I think it's good to think, as you have done, about getting in closer and concentrating attention on detail. So often, we see the bigger picture and forget to look in at the detail.
As a general comment on the images above, the one thing I wondered was whether use of
Local Contrast Enhancement would give the images greater 'bite' and depth?