Re question mark: I've decided that don't much like "Navy Seal Rescue?" If you really wanted a question mark then I'd use "Navy Seal: Rescue?" but then you run into trouble with it looking like "Rescue?" is a subtitle, which was not intended. ... I doubt whether the question will make a huge difference either way (to the reader interpretation, searching or presentation).
Re the dark background cover: The only reason I can read the orange text on the dark blue is because I know what it says. It seems to me that this is much more likely to be interpreted as non-fiction (or serious fiction) than the light cover; those icons don't say "comedy" to me (on the other funny thriller the icons are not comic either, but are in comic juxtaposition). OTOH the balance of this cover is good.
ETA: Gregg, if you took the "One nuclear..." text back to just two lines as I suggested earlier, you could have "One nuclear crisis" on the left of the missile, and "Two idiots" on the right of the missile. This may (just guessing) give the balance that is currently missing from that version of the cover.