Right click and select Color Picker, or hit CMD-SHIFT-C/CTRL-ALT-C to open it. Currently reads HEX, HEXa, RGB, RGBa, HSL, HSLa, HSV, HSVa, VEC3 and VEC4 colors – and is able to convert between the formats.
It also inspects Sass and LESS color variables. Just open the Color Picker with the cursor at a variable and it'll look up the definition for you. From there, you can click the definition and go directly to where it's defined.
Open Atom Settings, go to Packages in the left hand sidebar, and press Settings on color-picker to open the list of settings available for the Color Picker.
CMD-SHIFT-{TRIGGER_KEY} and CTRL-ALT-{TRIGGER_KEY}. Requires a restart.Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.