I think the only map that doesn't lend itself to the colour correction is probably Sharqi due to the lack of direct sun and it's location. It looks odd. Karkand, Wake and Oman, definitely look a millions times better. But BF3 wasn't built for it's colours or gameplay on the FB2 engine. It's purely an art/selling point game hence the washed colours, because as screenshots they do look very arty and very nice. Great way to sell the engine.