highrise buildings look yellow and red, normally they are light grey, black, white and with glass. developers change the highrise building colouring of autogen to look more of photogrammetry.
i like how the colouring of normal buildings varies by locality, thanks for that. 
Please change the skycraper colouring, i like to fly with normal autogen, because i can use terrain lod of 400 on my mediocre computer (5600g, 1080ti, 32 GB 3600 MHZ)