The assorted colors I received were the absolute worst. I should’ve looked closer before I bought. Whenever they say an item is a random choice they usually give you the choices no one wants. If I’m not getting my own option, it’s not worth buying!
I also received two of the same colors: white!!! White is my least favorite. 
Just like the other review I got two white tanks and one color not even listed in the photos. I ordered one of these previously and got the ones in the picture but this time around it was just all around bad.
If you’re unhappy, Make sure you contact customer service. They’ll have some options for you. Here’s the blurb.
Please reach out to Woot! Customer Service. To speed things up, let them know if you prefer a return/refund or a replacement (if possible).
Please allow 24-48h for them to respond.
Self-Return: Items without Li-Ion batteries can be self-returned within 30 days. Go to your Order Details to get started. The return label will be emailed from UPS.
Browser: Use the Woot! Customer Service form.
Woot! App: Choose Account from the bottom navigation and then Support.
Note: Woot! Customer Service replies go to the email address on your Woot! account, not your Amazon login email if used/different.
(Please Note: I’m not employed by Woot, but I volunteer to help in the forums.)