How do I color accent a digital photo?

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This is one way that you can do it in Photoshop Elements. Maybe this is helpful for other image editors as well. It would be helpful to print this out and follow along. It's easy to do, but you must do the steps in order. Perhaps your own image editor has similar commands. If not, you might want to add details or post a new question to tell us what software you will be using.

1. Open the image you wish to alter.

2. Save the image using a different name than the original name so that you don't lose your original.

3. Use any selection tool you wish to outline the object whose color you wish to preserve. The Magnetic Lasso Tool is pretty quick, but the regular Lasso Tool might be more precise.

4. Hit [CTRL]+[C] to copy the selection.

5. Hit [SHIFT]+[CTRL]+[N] to make a new blank layer.

(Name it if you want, but you can accept "Layer 1.")

6. Hit [CTRL]+[V] to place the selection in the blank layer.

7. Move back to the background layer by clicking on that layer in the layers palette.

8. Hit [CTRL]+[SHIFT]+[U] to remove all color.

8-A. ALTERNATE APPROACH No. 1: Hit [CTRL]+[U] and use sliders to desaturate, leaving a hint of color present.

8-B. ALTERNATE APPROACH No. 2: Use a "Convert to Black and White" utility, if your software offers this. In Photoshop Elements, the command is [ALT]+[CTRL]+[B].

9. Hit [CTRL]+[SHIFT]+[E] to merge the layers.

10. Save your work.

the program that i'm using to do thing on photograps is photoshop, is not that easy to use, but it's not that complicated either. you have just to make an extra layer and paint it.. if you try and need more help, just ask.

use the desaturation tool in photoshop