That's intriguing. I wouldn't have recognised it as weeds to start with; there is only the one trace of green in the original - and I can't quite see what that has become in the final version.
I don't know what all technical language means, but I love what the changed colours have done to the texture in the second one. Though the blue hurts a bit, the deepening of the neutral colours does wonderful things to the texture.
I find the final picture a bit water-coloury for my taste, but the effects of the technique are fascinating.