Your decision to crop this photo was your first very necessary step towards making a very "normal" photo, flat in colour, contrast, toning and compositional elements, into something that makes people stop and look and think. Well done. For the find of the subject is interesting, only was your original photo not that interesting.
But in cropping it the way you do and in focusing on the only two necessary elements, you went a huge step ahead. Since colours are so dull, a conversion into black and white and addition of contrasts helps.
The yellow toning as opposed to pure black and white is a matter of personal tastes, I think. It does make the entire photo a tad more eerie looking.
The desaturated version makes most obvious that the bench is not quite in focus, which does not show that very much in both the pure b&w and in the tinted version. Which is why I must say I personally like them both - might even lean towards the yellow tint. That would not have been my personal choice, I'd have added a tad red to it, too, but ... the picture seems to be the sharpest of the lot, and - agreed! - the creepiest.