I’m bumping my rating for this up a bit; I’ve found that I really enjoy it brewed at home more than the sample I had in the shop, and my fondness for this is definitely not decreasing!
I tend to find that the colour of the liquor can be anywhere between a usual yellow-y green sencha colour and a medium red from the goji berries and acai berries, depending on how much of the berries you brew with. The red colouring also tends to sit at the bottom of my mug (when I brew in just a mug, rather then with a teapot) unless I stir it up. Possibly due to essential oils from the berries, or how long it takes the tea leaves to unfurl and release versus the berries? Don’t quote me on it, though; I’m not a chemistry major!
Sometimes I notice a lightly tart aftertaste, so I think if ever I want to try this iced or chilled some sweetener would be useful for mellowing it out; predicting honey or agave nectar, but we’ll see when/if I get there!