First : make sure the pic is in RBG mode.
Second : "colorize" it.
That give just one color - so you'll have to sectionalize the picture and change that color ... I suggest you use "curves" to do that.
no it is impossible.
grayscale
You can find a picture of her by getting a Disney book of her.
Color Splash?
Yes, but you won't get colors such as blue or yellow. You will receive a color image of black and white. Your image never had color. Take a new picture in color and you will not have black and white. If you're good with photoshop (or something similar), you can use that to add color that wasn't there before. But that is difficult.
grayscale
Black picture frames will provide a great contrast to the white walls and draw attention to the picture.
You first need to create a "mask" (Photoshop has a special name for these that I don't recall at this moment). Then using the mask you can tell Photoshop to convert the unmasked portion of the photo from color to black and white.
The most important part of choosing a picture frame is to make sure the frame is not muted by your wall. Never pick a frame that is the same color as the wall behind it. Pick a picture frame that complements the shading in the black and white photograph.
Many cameras offer color mode options which allow you to take pictures in black & white, sepia, and vivid color. You set your camera to take black & white pictures, you take a picture, and you can view your picture in black & white. Then you can use photo manipulation software to modify your pictures. You can crop, sharpen, add effects or enlarge your picture using software like PhotoShop or Fireworks.
Use the black and white color pencils.
You can use tints and shades of gray to describe White. Using black to shade and white to tint. Since black and white are neutrals and not colors, you can use them to describe the color white.