Sheer and close to your skin tone works best, so milky pink or a soft nude. They blur the line where the nail ends and the finger starts, which makes them look longer.
A dark cream like deep burgundy or navy looks sharp on short nails, as long as you leave a hair of a gap at the sidewalls so the color doesn’t swallow the whole nail bed. Do the milky pink on most fingers and put one bold accent on the ring finger. Since two already snapped, keep a nail hardener on under whatever color you pick. This thread goes deeper on it: Is There a Nail Polish That Strengthens Nails?