Advice needed.

Advice needed.

I have dark brown panelling in both my kitchen and "entry room." (it's an L-shaped room at the front of our apartment with a brown computer desk and two brown bookshelves.) I'm okay with all the brown now that I'm finally used to it, but I have quite a few pictures and prints that I'd like to hang and I'm not sure which color of picture frame to use. My brown frames looked a little odd and black doesn't really match up with the rest of the room. Those are all I have, but I wanted some suggestions before I decided to buy new frames. So in your opinion, what picture frame color looks best on dark brown walls?
Frogger

Frogger

The New Garden Bed

The New Garden Bed

My Humble Abode

My Humble Abode

Coleus

Coleus

Can anyone tell me what kind of flower this is ?

Can anyone tell me what kind of flower this is ?

Tropical Lilly in full bloom

Tropical Lilly in full bloom