Try a colorful plant in a pot in the porch corner. Put flowers in the same color family down below.

I would paint the railing black.

Painting the railing a very dark grey (from the tile), rather than black would be a nice subtle contrast also.

Thanks for the idea. Our budget is a bit small at the moment, so we have to make the most of economical ideas. We have definitely been thinking of painting the railing and I have a big pot that i can use in the corner to plant some colorful flowers. Also, I was wondering if I should continue to flank the front door with these pots or if they're too small

The pots are a little small. Would be better if they were taller and more narrow. Could also have some tall plants in them.

Place wide iron flower baskets over the railing, with neat and tall plantings inside.

I agree with the baskets over the railings. It will add punch without taking up too much space.

Hanging baskets over the top rail, if possible a few hanging pots along the slant part; and on the wall side, a few decorative pottery or iron art bits, to draw you up. Add trellis on the front from ground to the step or top surface; and grow something colorful up the side, then you can get away with some colorful moundy plants at the bottom in planter or pots.

Along the bottom you might try this:

http://lifeonthebalcony.com/how-to-turn-a-pallet-into-a-garden/