I've recently found that Trace is being published in Japan. It went through some interesting changes. Such as, Tae Eun is now "Akane" and Ghang Gwon is now "Yuu". Plus all the art as been redrawn for the manga format and is now black and white.
You can check the first two chapters here.http://comic-earthstar.jp/author/detail01.php
Huh, I admit that the art is nice, but I don't see the point in hiring a new artist to literally recreate each scene. I'm sure that the company who adopted the webtoon could easily just make some adjustment and get it b/w with no problem.