Orchid changing colour. My Lovely Orchid white with purple has just produced a pale yellow flower?

The orchid is about 4 years old, has lived in the same place, most of this time, has produced up to 33 blooms most years. Is it dying ? Or changing back to it's wild state.

Orchid changing colour. My Lovely Orchid white with purple has just produced a pale yellow flower?
I don't know much about orchids, but

a lot of plants have pigments that are

pH sensitive in their color. Hydrangeas

for example. Maybe orchids are similar.

You might want to check the pH of the

medium that you are growing it in

and maybe do some research on the

net to see if orchids can be that way.

I suppose it could also be other things

in the growth medium that may have

changed.
Reply:it could be that someone living nearby, has another variety of orchid and, it has cross pollinated.