I just installed a tongue and groove engineered wood floor. It was a floating install over a concrete slab. All joints were glued. I had an area in the great room where the line got away from me. To get back, I had to eat a pretty sizable gap on one row. It's about 3/16's at the widest point. There will be a throw rug over it, but I want to fill it anyhow. I'm looking for suggestions on what I should use to fill it. I was thinking possibly an epoxy of some type, for strength. The flooring is prefinished and dark. Any guidance would be appreciated.

Man, I think we should get at least a couple free tubes from Colorite since all the guys here answer this question about once a week and direct people there.