I am looking for what kind of outside planters to buy. We have steps up to our front doors & then by our front door, we have space on both sides. Ideally, I would like to do outdoor planters, right outside my front door, and then partway down the steps, 2 more (on each side of the railing). Here's my questions:Do the two at top (by my front door - door is brown - so does planter need to match with this) need to match my front door?Do the two at the top (by my front door), need to match the two planters part way down the steps???Does anyone have suggestions on the planters to get? I like the square tops, but I also like the urns...such a dilemma. Any comments & pictures would be helpful.I found some perfectly square ones, but they are the metal - I liked the square, but not so sure if I like the metal.