I am not an expert at this sort of thing, but I was wondering if your problem of the green stitches looking obscured could be something to do with yarn dominance. There is a lot about "yarn dominance" if you do a search about it. It has to do with one color seeming to dominate over the other in color work, and it is not because of the colors themselves, but which color you hold in which hand. Check it out if you haven't heard about this before and it could be an issue.
I have never done color work with a lot of weaving. I follow more the EZ school of colorwork and just carry it across the back unless it is over 5 stitches. :-)