I'm sorry, I know this is off topic, but I don't know where else to go for info after looking on the Internet. I bought a scented geranium last year that had sort of fuchia colored blooms that had dark burgundy markings and edging around the petals. Gorgeous thing. Have kept it in the sunroom all winter and it has begun blooming, only the blooms are now solidly burgundy. Anyone have a guess as to what is happening here?

It is likely the stress of wintering in the sunroom. Once it is outside again it should again make the flowers that you like.

I agree with ward.
I used to put my pots of geraniums in the basemnet for the winter no water no nothing and then in spring they would start to leaf out in solid color leaves and then as they grew developed and matured they looked like the original.

Penny
Niagara Falls, NY
USDA zone 6a/6b
Heat zone 4
Sunset zone 39

Thanks ya'll it will be interesting then to watch what happens in the spring.