Delphi Color picker VCL controls enable you to easily add a color selection dialog to your Delphi application. Interface styles include Color wheel, hexagon, listbox and slider controls to help your users choose colors easily and accurately. Many of these components also offer conversions between formats such as RGB, HSL and CMYK.

Delphi Color Controls & Components by tmssoftware.com

TMS Advanced Office Graphics Control Pack V1.1

Office 2007 / Office 2003 style selector components