A little insider paint info...
Good point, J.Garcia. I am a professional painting contractor. The sheen, or luster of paint is not standradized throughout the industry. The terms eggshell and satin get used and can be confusing. One mfgr's eggshell will have the same luster as another's satin. Some satins are really shiny. Traditionally, the luster scale goes, flat, egshell, satin, pearl, semigloss, gloss.
Flat black is traditional for theaters. I am a small theater goer in Chicago, and have donated flat black paint to small theater troupes that must paint the rented theater black before they can get their deposit back from the venue owner. The English term "Black Box Theatre" comes to mind.
But, as has been pointed out, flat paint sucks for wearability. Even though the big paint co.s swear their high end flats are scrubbable, (the seceret is the flat has some shine to it!), flat by nature will pick up dirt, where as shinier paint is less susceptible. Now........while still available, but rarely used is flat oil based paint which produced a much flatter, "dead" flat finish and was very durable.........but sure is stinky painting a whole room with it....
So go with egshell.
As to colors, Benjamin Moore has a great lineup of instock, redi mixed deep colors. Classic Burgundy, Deep Navy, Leather Brown and Hunter Green come to mind to help with WAF. (don't quote me on those names)
It is nice buying the readi mixed colors for a couple of reasons- one, you can return unopened cans, and two, the redi mixed deep colors cover much better than when they mix it in the store.......I think the dri factory pigments are better and more thoroughly mixed.
Hope this helps.....and if anyone ever has any painting, decorating, or actually home improvement questions, just ask me, OK?
(i'm also a remodeller and pretty fair carpenter, too....)