He found it easy to add vivid color to this old family portrait with AKVIS Coloriage.
Step 1. First the photo was scanned and opened in Adobe Photoshop:
Family Portrait
To colorize such a dark, monochromatic photograph in bright colors, some preliminary color correction is needed. Use any of the correction methods in the Image -> Adjustments menu.
After Color Correction
Step 2. Call the plug-in using Filter -> AKVIS -> Coloriage. Use the Pencil to specify the colors for all objects in the picture. Use the Keep Color Pencil over the eyes, so that color will not spread into them.
Color Strokes
Step 3. Press to start the colorization process and then to apply the result.
to specify the colors for all objects in the picture. Use the Keep Color Pencil 
over the eyes, so that color will not spread into them.
to start the colorization process and then 
to apply the result.
— A Lovely French Couple