User blog comment:LostInRiverview/The Sims 4 has been announced!/@comment-1692461-20130506215945/@comment-2201555-20130506220801

The blue and green colour palette have essentially become native to the series, so it's only natural that they keep it this way and as such it'll affect the general look of the final product. TS1 was a duller looking game than TS2 and TS3 (with the latter being the most vibrant) due to palette differences and now that everyone is accustomed to the vibrancy of TS3, there's no point fixing what isn't broken.

I personally don't mind what colour range they go for, just as long as I don't need mods to achieve basic functionality.