Convert your black and white photo into a colour photo
Step 1:
Open the Black and white image in GIMP. This is the image that I have used.

Step 2:
We need to select the hands using the Hand drawn region (F) like this.

Step 3:
Now go to Layers>Colors>Colorize and use the following settings there.

This is what I got after colourizing it

Step 4:
Similiarly now select the head and use the same steps to colorize it. This is what I got as the final result.
