The blue is a secons exposure. Sorry do not know type of plane but here is the answe to your other question.

The satellite that takes most of Google Earth image is Ikonos it employs linear array CCDs. One set takes panchromatic images (grey scale) at 0.83 meters per pixel and the second set takes multi spectral images (MSI) at 3.2 meters per pixel. The MSI imager because of physical location on the satellite images are acquired later in time. The MSI takes the colored components at a lower resolution, either Red, green, blue or it swaps one for near infra-red. Just like color TV it takes advantage of the eyes chromatic sensitivities.

These images are time re-aligned on the ground on the assumption that there are no moving objects in the field of view. As a consequence any moving object will have a colored image that appears ahead of the moving object and at lower resolutions. These images are double exposures.

If you look on highways closely where you know vehicles are traveling at 60 plus mph you will observe the same red and blue shadows.

Attached is a classic a 747 at high altitude over the coast of Maine it could be approaching 600mph (ground speeds) which is 880 ft per second.