This treatment is so easy! Basically I picked two colors from the same chip strip. One was lighter and one was two or three shades darker.
I painted the lighter color first on the wall - I'm pretty sure it was eggshell finish. I hate flat paint, so I refuse to use it, but it works best if the first coat is sort-of absorbent.
So first coat painted... while that's drying mix your second coat in a bucket with some painting medium that is for faux finishing on walls - I think it thins it down without screwing with the drying time...ask the paint department peeps...it's clear, I don't remember what kind it was exactly...sorry.
Anyhoo, mix that up in a small bucket and grab a bunch of plastic bags. *word of warning* the ink on the bags could possibly come off on your wall - so make sure you use ones with little printing on it or use the inside of the bag. I used a LOT of cvs bags. You may also want some gloves, it's not a tidy process! I didn't, but had blue left on my hands for a couple of days.
Wad up your bag, dip it in, like you would a brush- not completely in, just a part of the bag. Then, dab it, smash it, stipple it, pounce it, dot it on the wall in random ways in one little area - work your wall in sections. Don't slide it or swipe it or anything like that! It will smear the paint and you'll have to start over. The plastic is going to add and remove the second color of paint leaving a cool effect on the wall.
You don't have to leave the bag balled up either. I would start out tidy and then end up with it open, scrunched up small, then loosely wrapped around my hands while I'm patting the bag like I'm giving the wall a high-five, etc. The more you don't do the same motion with the bag in the same position, the better the effect. Work quickly, so you don't over work the paint. It's fun and forgiving too! If you have someone helping you, don't start on opposite walls and meet in the middle. It will look different-believe it or not! Work side by side getting into each other's space so that you're work as one - trust me on this! Your technique can even look different day to day.
It's really really easy and not as intimidating as maybe I'm explaining it. Does that make any sense at all? It's been a while since I've done it. If you have any more questions, please please please ask! Good luck! You'll love it!!! In my other house I did it with greens and it was awesome