Been a bit busy lately. Great attempt Chode! Well done. Try a bigger image next time with more detail. You can tell a good colorize by looking at your own skin. Does your skin or hair look like that. If you saw someone walking down the street with skin like that, would you run away thinking it was a vampire? Before doing a colorize, pick a color picture from the web that looks like what you want your image to look like. Use this image to sample colors from and compare side by side. Most of the images that I have seen so far in this thread were well done but still electric looking. Remember to compare to a real color image.
You have been busy. Good work. Very creative. The last girls hair that you did looks a bit green. Also look at the group shot that you did. Nice job on the clothes. Do the girls skin tones look real or like painted dolls. Nobody's skin is the same color everywhere. This is a mistake that most people make. They pick a color that they think looks like flesh and then they paint the whole body with it usually set to colorise or hue. That will not make a good image. You need to mix up the colors. Remember peoples faces have blood in them. That is what makes you blush. Your skin is usually redder in the cheeks and hands. Check out this link http://media.dabu.com/users/dylan/originals/234_3483_r1.jpg
Look at the color shifts in the guys face. It is yellow in some areas and red in others, Some areas it is almost gray.
Good attempts by everyone. Keep it up. Keep studying the face. Look at your own face and hands. Look at your hands, Your knuckles are probably pink compared to the rest of your hands. Use this knowledge, Good luck all. Have fun. Thanks for the input.