Instructables

Step 7: Painting Your Mushroom

Picture of Painting Your Mushroom
When concrete is thoroughly dry, paint base coat onto mushroom top and stem.  When the base coat is dry, use a brush or sponge to add a shadow of a darker color around the mushroom top and streak it onto the stem.  Dab on a (third) lighter color accent until you like the way it looks. 

I used Americana Acrylic paint

            BASE COAT:  Cocoa
            SHADOW:      Burnt Sienna
            THIRD COLOR:  Celery Green

Don't stress over the paint job...you're just looking to add a little dimension.