How can I color the specific region of the image?

Hi!

I want to change the color of specific region in an image. The background color should be different from the eyes color of the image shown below. Thanks

 img = imread('C:\Users\Junaid Khan\Desktop\jun.png');
bn=im2bw(img);
imshow(bn)
bn=bwareaopen(bn,100);
imshow(bn)
[L,n]=bwlabel(bn);
imshow(label2rgb(L));
prop=regionprops(L);

The above is the input image and while I run this code the output is like this.

I want to change the eyes and mouth color and also the background color should not be same.

Thanks

[DGM]

You've said that you want regions to be different things, but you haven't really said what you actually want them to be. It's fairly clear that using label2rgb() is inappropriate for whatever you're trying to do, but it's not clear whether bwlabel(), etc are either.

I've posted a number of demos involving masked image adjustment, blending, and composition. For anything more tailored, you're going to have to be specific.