Romaine lettuce is very green
You're right about that. I like using romaine lettuce when I make stews and soups, because it's tolerant of heat unlike most lettuces. Keep's the crunch!
Which salad dressing is your favorite?
I really like Italian dressing, the blend of water, vinegar, chopped bell peppers, and dill is just a one of a kind flavor for me.
I prefer caesar salad dressing.
That's a good choice too. Caesar salads have a unique taste I think, probably due to the worcestershire sauce, garlic, and parmesan cheese. What a combination!
I also like adding olives (green or black)
Definitely a healthy edition, I like the lazier olive oil version, which is the liquid fat obtained from the olives.
That could make a good spread.
I like the way you think. Olive oil is really versatile too, it's also used in cosmetics and soaps. Probably good for the skin I'd guess.