Fortunately, GitHub response was peaceful. They said that’s good as a first step. But similarity is not only color. It’s made by with icons, with fonts, with the layout, etc. We should remove these similarity and refresh our UI eventually.
As a result, we will release the next version 3.13 with changing to the Bootstrap default theme and simplifying some parts of UI. And continue to make difference with GitHub through future versions.
Anyway, we want to continue to use GitHub for our project because we love it. GitHub has been making revolution in the open-source world. Great thanks for this fantastic software development platform.