In the Color Key Program System, all colors are divided into two categories: 'cool palette' and 'warm palette.'
Literal
Color Key Program System [at-では] all [gen-の] colors [subj-が] 'cool-palette' [and-と] 'warm-palette' [gen-の] two [to-に] divided [passive-られる].
A heavily loanword-laden technical sentence. カラー・キー・プログラム (with nakaguro dots separating loan components) is a cosmetics/design term. クールパレット and ウォームパレット are fashion/beauty color-analysis terms. ２つに分けられる uses the passive of 分ける 'to divide' for an objective fact presentation.