Hi, I just thought I should give some information about Harrington's since I bought it recently and came across this thread after searching for it on this forum. If you'd like to know more about the ingredients & what the packaging looks like, you can find it here:
Harringtons Optimum Hamster & Gerbil Food
I actually bought this thinking is was a mix, so I was quite shocked to find little green pellets (each about half the size of a single Syrian poop :P). It doesn't don't look to be artificially coloured, and almost smells like hay.
It isn't my hamster's favourite, because I feed him other mixes as well for variety. When he selects his food, he leaves them out... But since they somehow disappear from his foodbowl afterwards, I guess he eats them as well.