You have to remember, if you put green and red together it will make brown,personally the colour my drinks turn out don't bother me it's the taste that counts .......Today I have had....Kale,blueberries,a kiwi (washed and skin added) ,half a banana and a few walnuts.....and I just added water. It was green.
I have my Bullet pocket nutritionist book , it tells you what most fruits and veg are good for.....example: Blueberries,high in fibre and good for their anti-inflammatory properties.
Kale....very high antioxidants, and boosts cardiovascular Heath.
If anyone wants to know what a certain fruit or veg is good for, I will see if it's in the book.