Is my setosa grafting?

[Will Haider]

Hello,
I noticed that my setosa was starting to develop some green streaks in it a couple of months ago but I didn't make a post in fear of it disappearing but it has maintained this color! Is it grafting?

 

[ajcanale]

Grafting? No. Morphing colors? Possibly. Mine gets dark (almost purple) streaks when something is off or there are elevated trace minerals or heavy metals in the water column.