Unfortunate but true. I've always considered buying from China as basically buying without a warranty.
One thing I've found is that if you specify what you want, they tend to try to deliver it. But they don't do the logical thinking by default. So when they receive an order for 2 projectors, they don't automatically think 'we'd better make sure they match as closely as possible' as you or I might logically assume. They just move the quantities.
Why don't you measure the good green and get them to send you one that matches it at reduced cost. Probably work out the same as shipping the dud one back.