A free app for Android, by GameHarbour.

What do you get when you combine a Christmas coloring book with an app that lets you color by number? You get the best of both worlds in the form of Christmas Color by Number. With a vast collection of Christmas-themed coloring pages, you can relax and enjoy the holiday spirit while creating your own artworks. And the best part is, you don’t have to wait for Christmas to start your holiday fun!

You can make your own masterpiece and color them based on your preferences. It has stunning and realistic oil painting effects.