No nothing colored. Just this "film". I'm getting a little bothered by it. It just looks "dirty" and I can't get it out. I thought it was leftover from when I used only filtered (not RO) water. But, if it was that I would think the cleaner should dissolve it. I am almost getting to where I may go back to a Bunn. As everything in there is stainless steel. It's just the cosmetics look "unappetizing". The coffee is fine.............great even (today I ground some PEETS dark roast) Major something or other roast. I found a GREAT deal on some really primo beans a few days ago at Costco. They have 3lb bags of this
https://www.amazon.com/dp/B0058E62SC/?tag=tvwb-20 for only $12.79 and this stuff is OUTSTANDING coffee. I have I think 5 bags of it stockpiled and if I can find a way to really preserve it, I'd buy even more