Al made a good point - something for everyone to remember or ponder.
Looking for mix-up colors. I don't feel there is any reason (unless you're just extremely particular) to buy paint or stain "brand new & perfect". You can get someone's mess up for WAY less. At the hardware store here in my town, I've only found 1 gallon cans. But if I needed more than 1 gallon, there's no reason why I couldn't just mix up several cans to get one final color.