Theres all sorts you can do with the photos for effect. Heres quite a simple one using layers.



(borrowed from another site) How to make a pic Black & White but leave part of it colour
This was the first thing i learnt in photoshop... it's really easy

get your picture you want to change

select Layers then New Adjustment Layer and then Hue/Saturation
when the box appears turn the saturation fully down -100

you now should have a total B&W pic

you need to let the colour be seen from the Background layer below

select the brush tool and pic a brush and adjust its diameter to suit the size of the item you want to have in colour.... make sure the opacity is set to 100%

Now just go over the bit of the pic you want in colour and left click....
the brush tool will now remove the part of the B&W layer you have the brush on.
if you make a mistake just click the B&W box to reverse the colours and the when you hold down the left button you can put back the B&W with your brush.