Advice needed...

I'm going to do a photo wall.
I've got the frames all done and the layout sorted, but what I need to know is...

Should I have black and white photos only, or colour and black and white????

I need to decide before I get pics printed...

Here is what it will look like...


I might put the family thing at the bottom and move the frames in the middle up to the top... still deciding.
Each photo will have a white border too within the frame.

So what do you think???