yes Web part chrome is a "box" around the Web part where you can add header, footer, generally border and you can place the Web part options (Verbs) where you want. When you have a Web designer at hand then it is much easier to accomplish this task, because he can design the whole Web / Application and then make you a clear theme (so all the styles that you are not using, e.g. MonoX modules that you don't use, are left behind). We are working on the article that will cover this subject in detail, stay tuned.
BTW: Small note regarding the "changing the default MonoX theme", please copy the default MonoX theme and work on the copy so you can easily upgrade to new MonoX theme when we release new version.