Well it's certainly colourful.
The folks over at Airliners.net are in a frenzy about this leaked photo showing Southwest's new livery. Most are comparing it to the US fast food chain Hotdog On A Stick, which is not a friendly comparison.
Personally, I like the colours but why go with the Facebook font for the titles? In the minds of purists, nothing will ever compare to the original "Mustard Bus" livery from days gone by.