Realistic
Less saturated but better constrasting colors, which gives a softer, more convincing and realistic look and feel to the game. Try and see! The rather cold and greyisch color scheme matches really well boreal and northern areas. It adds to the admosphere of those areas. It does not fit very well for tropical areas.
See also “Realistic II” for a warmer impression, more suitable for southern-European, Mediterranian and tropical areas.
(“Realistic” can be used with achievements. It is not considered as a mod, and does not disable achievements)