cocoa objective-c: Change background color of custom view

If I have a bunch of custom views that I 开发者_开发知识库made in IB, how can I set up a background color for each when the app awakesFromNib?

In your NSView subclass:

- (void)drawRect:(NSRect)aRect
{
    [[NSColor redColor] set];
    NSRectFill([self bounds]);
}