This utility is available as a stand alone executable, and as a MS Visual C++ 6 Add-In dll. Both offer the standard windows colour picker window and an Eyedropper tool to select colours from anywhere on the screen. Both offer a preview pane where you can see you colour as either a background or as text on that background. At this point they digress.

The C++ Add-In offers two choices, an RGB macro or a COLORREF hexadecimal direct representation of the colour. Both of these appear for the colour selected, then you can just press the Insert button next to the one you require to have it inserted into the active editor window at the insertion point. There is also a Persist check box which prevents the Colour Picker window closing after insertion. Custom Colours are preserved until the Add-In is unloaded (usually because C++ is exited). If the cursor is on a colour in the text window (in RGB macro or COLORREF format) before calling the Colour Picker add-in, it will start with that colour selected, which can then be altered in the Windows Colour selection dialog box.