Indicate "skipped meal"
Currently when you only log one meal a day your day ends up being green. However, I might've been lazy and didn't log everything, in which case "green" isn't exactly correct.
It would be nice to be able to say "finish day" or indicate "done" or "skipped meal" on meals so that you can indicate you logged your day. If I didn't and I'm below the calorie target it shouldn't be marked green.