On 12/2/2010 12:40 PM, blueman wrote:
I need to patch some concrete outside and I want to be able to match the
color (basically 'dirty looking') and make it look old& weathered.

Can I just add a little 'dirt' (i.e. soil) to the mix to make it look
darker and dirtier or will this create problems such as encouraging
organic growth or weakening the concrete (I would only add a little
bit).

Any better ways to weather concrete?

Note: it's only a small patch so I was hoping for something simple and
cheap...

Go to Walmart, Michaels or other craft store, buy a couple of bottles of
acryllic craft paint....mix gray, a touch of yellow, a touch of burnt
umber, dab on lightly with a stiff bristle stencil brush. I used it on
concrete to cover dark wood stain that spilled and it did a very
adequate job. Any paint, if not water soluble, is just about impossible
to remove from concrete.