Never Ceasing Amazement: 2K Flushes Part 3

I come back from my first week away with baby flushes in the tank, right? I do the flush thing and the placid blue water turned a violent dark brown. Here's the lowdown on the phenom:

1. 2KF will please the eye upon installation, delivering consistent blue peacefulness with every flush.

2. On the first morning, you wake up and the blue is gone. I don't know if the bleach tablet cancels out the blue in the bowl or what...it was just gone. One flush and its back.

3. Go away for a week and the water in the bowl is blue again. ??? Don't ask. Flush once and be amazed. The blue turns to dark chocolate brown out of nowhere, flushes out, and replaces itself with blue again.

Hey, just thought...do they make a gag version of 2KF? I want a dark yellow tablet to toss in somebody's tank when you go over to their house. Every time they flush it'll just look gross! Some of you chemical people get on that one! This stuff is important! Oh yeah...maybe one that makes the water stink, too.