An Objective-C library for handling Adobe Color Swatches (.aco files).
Here is a sample that loads a color swatch from the appliation bundle and reads some colors.
// load the file
NSURL *url = [[NSBundle mainBundle] URLForResource:@"MyColors" withExtension:@"aco"];
ACOColorSwatch *colors = [ACOColorSwatch colorSwatchFromFileAtURL:url error:NULL];
// read some colors
UIColor *backgroundColor = colors[@"Picton Blue"]; // you can access colors by name
UIColor *textColor = colors[0]; // or by the index in the file
Colors are returned as UIColor on iOS and as NSColor on OS X.