How to apply a Sin City effect on a picture using photoshop? Any easy way?

Where it's black and white and some parts are coloured? try uploading to tinypic.com


Make the picture black and white and then just paint the part you want to be coloured in black and white then reverse it.





Don't know how to do it in photoshop, sorry.


but i always us tinpic.com


i love the effect;