Yes it does, but some dark earth on one side of it might help (mixing up a little course polyfilla with dark brown paint and dabbing it to one side of each grass clump). Now it might look like a tank that's been unused for months and that grass has started to grow on it - that grass is just a little too clean.
I have no idea - I tried lookign breifly for reference photos without luck.
Regardless, it's a good idea that I'm saving for later.