 Among these are some species that otherwise do not drastically change their colors, including certain anoles that generally are brown during the day changing to greenish or whitish when sleeping at night, and certain anoles that generally are green during the day changing to brown when sleeping at night.Disregarding color change, minor individual variations in the basic color and pattern, mostly related to sex or age, are common.In some anole species this variation is more pronounced and not only related to sex and age.