Okay for this tutorial you will need
MS paint
Microsoft word
This tutorial will show you how to make a pic black and white with one part colored
Okay First open up your image in MS paint
Go up to edit>select all then right click your image and press copy!
Open up Microsoft word and right click anywheres and press Paste
click the image and a tool bar like the one bellow should show up!

Select the button highlighted in the screen shot bellow! And select "grey scale"!

That should turn you pic. black and white!
Okay now right click your image and select "copy"
Paste it into MS paint next to the original colored image. (put some space in between them)
Okay now highlight on the colored pic which part you want to stay colored. I highlighted around lady's head
Once you have highlighted around it right click and press "copy"
Go over to the black and white image and highlight anywhere on it with the square tool
then right click and press paste
Drag the colored part over the black and white part..
If the colored part has a white background on it go up to image and make sure that the "draw opaque" does not have a check mark by it! if it does just click it and it should go away!
THis is my finished product!