Complex sentence: An initial batch of four trains, the second unit being 357 044, will be repainted into their original white colour, but with dark blue doors, and branded with both "national express" and "c2c" logos.
Split into simpler sentences: An initial batch of four trains will be repainted, the second unit being 357 044. The units will be repainted into their original white colour, but with dark blue doors, and branded with both "national express" and "c2c" logos.