Colorful or uniquely patterned glass diffusers are typically hand made and, as such, will exhibit some variation in both color and pattern.
Such variations should be considered normal and indicative of hand crafting rather than machine production.
These lights more than live up to my expectations. I have three...one at each side of garage door and one at my front door...the curved and beveled glass at the top and sides of the lamps cast an enchanting light!
We bought this for our back door after doing a kitchen remodel/addition to the house. It's to match the whole series we bought about 3 years ago, when we updated all our outdoor lighting on the front of the house. We're very happy with the product!