On closer inspection, the blue of the stripe and on the engines actually match. The apparent color diference is a bleed-effect optical illusion.
Engines: (side, no shadow)
Stripe: (over wing)
Stripe: (Behind trailing edge, directly over "B" in BOEING 737-700)
Still, you guys know I like FL
, and it's UGLY! That blue only belongs if they use it to replace the teal!
Those who fail to learn history are doomed to repeat it in summer school.