No it's not coffee with green food colouring in it, and it's nothing like Green tea.
It's the difference between buying your coffee in the paper cups provided or using a travel mug. We have about a dozen different travel mugs we've picked up here and there, and use all of them. In the morning we make a pot of coffee and take our mug to work. It keeps the coffee hot, the lids close so you don't slop all over when you're driving, and it actually saves us quite a bit of money. How does it save money you ask?
That first cup is made at home, which is a quite a savings in and of itself, but there's more. I generally have my first cup on the way to work and finish it around 10. The mug keeps it hot enough that I don't have to be in a hurry to drink it. Then I go out to Quality Convenience for another cup. They sell java moose coffee there and I like it a lot more than that burnt tasting sludge you get at Tims. A large coffee at Quality Convenience costs $1.25, but if you bring your own travel mug it only costs a dollar. Okay, so a quarter doesn't sound like very much, but add it up over a work week and it's $1.25. Multiply that by 52 weeks in a year and it's $65, then double it for Darrell's coffee and we save $130 dollars a year, by using our travel mugs for our coffee. Add the savings to the 520 paper cups we aren't using and throwing away, and the $2 or $3 dollars a travel mug costs suddenly seems like a no brainer, doesn't it?