Put the text cursor on any color value in a CSS file and press <span class="key">Cmd/Ctrl</span> + <span class="key">E</span> to open the color picker.
Taya' ri retal rucholajem tzij pa xab'achike rajilab'al b'onil richin ri CSS yakb'äl, k'a ri' tapitz'a' <span class="key">Cmd/Ctrl</span> + <span class="key">E</span> richin najäq ri rucha'onel b'onil.