This dahlia series is shot from flowers from my own garden (with maybe one or two stolen from my neighbor). The frames are flat black, and mats are white (note that you can frame with or without a mat! Note that adding frames and mat will make the overall piece larger by 4"-8" per side. See photos for reference.
Vivid Metals are a cool modern alternative. No frame or glass needed, and they come with their own mounting, floating about a half inch off the wall. The result is a high gloss image rich in colorwith outstanding clarity. They make a statement!