This tutorial will teach you how to add colour onto an old photograph that may of lost colour through fading or an image that is originally black and white or greyscale, sometimes this can take a lot of time but the more time spent the better the final result.
1.) Open up the image that you want to use and ensure that the image mode is set to RGB, you can do this by going into Image > Mode and then check its set to RGB.
2.) Press Q to go into quick mask mode and make sure that the quick mask option that is on the main toolbar are set to selected areas. Using the Paintbrush fill in the area that you would like to colourize, this area will then appear in red.
3.) Press Q again and this will send you back into standard mode and a selection will appear around the area you filled with the Paintbrush, when completing the next step your selections will be saved as Layer Masks which you will be able to restore later but you could also save your selections by going to Select > Save Selection and then name the selection after the area which you have just outlined in the image you are using.
4.) Click on Create New Adjustment Layer icon which is at the bottom of the layers palette and choose the option of colour balance from the menu, you will be given a option of highlights, mid-tones and shadows and adjust the sliders for these until you find the colour that you think looks the best, this choice isn’t final you will have the option of going back and editing using your layers palette by double clicking on the adjustment layer icon for the layer that you want to edit.
5.) Repeat this process over again for the other parts of the photo that you need to colourize, when this is al done and you have got colour using your colour balance adjustment layer you can also make further additional adjustment layers to adjust each colour layer more, you will be given a selection of options including Contrast, Shadows, Brightness, Saturation, Hue… Just load the particular selection by clicking CTRL and then clicking onto the adjustment layer, and repeat the process of adding a new adjustment layer.