A question, at this page, where it shows the features of the i3 mk3, it says:
Optional WIFI with Octoprint interface included

Does this mean I don't need to buy a raspberry pi (so that I can flash the Octoprint software in it)?

Also, I was thinking of buying the mk3 in all black, but it says that instead of the orange, it is "black printed parts" (in the dropdown where you choose color). Does this mean the all black is of less quality than the orange?