i used lightflow from day 1 of getting my phone (back in july).
for the first several weeks it did not work in terms of colors matching the actual color you assigned to each function (e.g. if you wanted sms to be blue, it would actually be a different color).
finally the developer released a patch that would allow you to select (s3 US / CAN version) on a check list in the settings. It did straighten things out (for me atleast, i have an s3 with at&t).
ONE MAJOR PROBLEM...
IT KILLS YOUR BATTERY. I was on these forums for weeks posting screen shots of my battery stats, researching any battery drain forums, even swapped out my phone through samsung, and couldn't figure out what was causing the drain.
finally... saw that the amount of wakelocks this app causes (keeping your phone awake) was around 10,000 (which is absurd). I love this app, it worked well for me, but i uninstalled it until the developer can fix this issue. My battery problem was completely solved when i get rid of lightflow.
goodluck.