I’ve posted on this topic before. The entire idea intrigues me because our exterior brick is UGLY. Check out what this gal did to transform her brick. This is the fireplace wall before:
Did you say, “Wow!” when you saw it? I did! You can copy this look by following the step by step instructions found here.
If the white wash look doesn’t light your fire, remember this fireplace makeover from Feb 13, 2012? It goes from light to dark and you can read the tutorial here.
Both makeovers are on interior fireplaces, so I’d need an expert to weigh in on whether the methods transfer to the outdoors.