How to colorize a black and white photo
difficulty elementary ( Watson :-) )
Starting Photo: I found this on the web
Step 1: from menu... change the method from grayscale to RGB color
Step 2: set the Quick mask option and select the areas which you want to have the same color
Step 3: un-select the quick mask, copy and paste (new layer)
Step4 adjust the values hue / saturation set the options colorized and preview
for the skin (only) the hue value must be 20 the other parameter change every photo
Step 5: visualize both layers...and this is the result
Step 6: repeat the process for every area that you want to color
change the hue value for every color
it's a good rule to maintain the layer separate until... the end of the job.