We have a live one in this darker toned standard round brilliant. First I see a pink purple that is very close to maroon and I begin to wonder. Then I look at the back of the storage box and see color changer, so I get up to investigate. With the mixed lights I have at the moment, I can certainly see it slide into more orange or purple in the pink so I could see a changer under the right circumstances. In most cases you real needed to isolate different light sources to see the true color change. This droplet of color, of course it got in, does has a slight inclusion that is impossible to see face up with the darker tone level. This subtle, dynamic color engine, weighs 1.67 carats.