Colorize a Black and White Photo
Apply color to an existing black and white photograph.

Do it for me 1. Select Image > Mode > RGB.
Do it for me 2. Select Layer > New > Layer.
3. In the dialog box, set the Mode to Color, and click OK.
Do it for me 4. Select the Paintbrush tool .
5. Choose a brush size from the pop-up palette in the options bar.

Pick a brush size small enough to fit in the area you want to color.

Do it for me 6. Choose Window > Show Swatches to display the Swatches palette.
7. Select a color from the Swatches palette.
8. Drag the paintbrush over the area of the photo you want to colorize.
9. Repeat steps 5 through 8 to apply different colors to the photo.