Boy, you've got a rose
with a personality disorder, Deb. lol! My neighbor's has a gorgeous, huge bud right now that is pure white with the exception of a splash of pink on one outside petal. Maybe it's a thing they go through in the fall? Or could possibly be caused from something added to the soil? I don't have the Iceberg and I can't remember who it was that had one in the thread where we discussed this in the past. I have advanced CRS today.
I just found this info on another website:
"Iceberg - The best rose
available. A white flowering cluster floribunda with slightly scented flowers
. A very free flowering rose
that will show colour all year round. flowers
can show pink flushes as they mature especially in autumn. An elegant upright bush with shiny green foliage."