The tag on this plant says it is Blc. Copper Queen but I have my doubts. Anyhow, regardless of what it might be, I just wanted to share the color change with you. No doubt that it has Bl. Richard Mueller in it's background.
Looks like a Guarianthe aurantiaca hybrid to me, because of the lip and flower structure. Probably not a cross with Blc Copper Queen though, as it would likely "blow up" the lip.