HexColor is a helper tool for CSS/HTML/Cocoa color designers.
It uses clipboard monitoring to fast adjust and replace colors.
Select color in a CSS file, inside HTML or in Objective-C source code, then copy with CMD-C colors in form:
◦ [NSColor colorWithCalibratedRed:0xA4/255.0 green:0xC5/255.0 blue:0xFF/255.0 alpha:0xD4/255.0]/* A4C5FFD4 */
Adjust color then paste it back via CMD-V to replace just in place!