Painting Pressure Treated Wood

[Andrew S.]

One of my properties has a brick patio with treated wood guard rails.  The red brick color and the treated wood don't make a really nice color combination, and I'm thinking about painting the wood.  Now, I have certainly heard that painting treated wood is not ideal.  How absolute a statement is this?  Will the paint fail to adhere completely, or is it more an issue of the treatment chemicals bleeding back into the paint, or something else?  Can it be remedied by choosing certain quality paint or certain (I suspect dark) colors?  This is only rails, so there would be no foot traffic, etc on the painted lumber.

Thoughts?