We're now introducing you the trick to hide your Mac menu bar. It's useful when you're trying to mimic the way Windows users do to their menu bar. But for real, by hiding (getting rid of) your menu bar, you can get extra 20 pixels for your display.
And after your hardwork in tweaking, you don't need to care about what's the most suitable color for your menu bar; Invisible is the most suitable color.
Before starting, I'd like to tell you that you will need to have a free application so called Property List Editor. This application is already packed inside your Mac. In case you've deleted it, get it back now.
Here is the basic idea, you tweak the Info.plist file of certain application. This application, when launched, will hide the menu bar for you. It's also named as Full Screen Presentation Mode by Apple developers.
Enough of the explanation, I think. Let's jump to details: