ColorExplorer is a color picker.
It is written in Tcl/Tk, which may not be installed by default on your system. If it is not, don't worry. It is free and easy to obtain and install. The easiest way to obtain the Tcl/Tk environment you need is to install the ActiveTcl (http://www.activestate.com/Products/ActiveTcl) distribution from ActiveState (http://www.activestate.com). This distribution provides the Tcl language, the Tk graphics library, and a bunch of extensions. Don't be concerned by the fact that ActiveState is a commercial outfit. The Tcl/Tk distribution that they provide is free as in both beer and speech. They make their money selling services and programming tools. The ActiveTcl distribution is currently available for: GNU/Linux, HP-UX, AIX, Solaris, Mac OS X, and MS Windows.
For FreeBSD, Tcl and Tk are available at:
http://www.freshports.org/lang/tcl84/ http://www.freshports.org/x11-toolkits/tk84/
On a Unix-type system (including GNU/Linux, FreeBSD, OpenBSD, NetBSD, Mac OS X, and SunOS/Solaris) just run the file as shell script and it will invoke wish, the Tcl/Tk interpreter, itself. You can also invoke wish explicitly if you wish.
To install on a Unix system, it should be sufficient to just to type make. This will install ColorExplorer itself and will compile and install the included copy of xoris.
Xoris is not necessary for the operation of ColorExplorer. It is used only to provide the Copy function. If you do not have xoris installed (or cannot, since you are using a system whose window system is not X11) ColorExplorer will detect this and configure itself to omit the Copy function. Everything else will work.
For more information about ColorExplorer, see its home page:
http://billposer.org/Software/ColorExplorer.html.
For more information about xoris, see its Freshmeat page:
http://freshmeat.net/projects/xoris or the author's home page: