I have used burnished gold rust-o-leum semi-transparent stain on our basement floor, it is hideous. Everyone in the house agrees about this and we are not fussy people. What can I do to change the color? Yes it is sealed, it didn't look as terrible before it was sealed.
First thing is to contact Rustoleum, have you? or where purchased. What product (and Manufacturer) did you use to seal this, were there claims of "No Discoloration" on the sealer?
Sealants are designed to either penetrate or coat a substrate, need to know what type was used to determine best solution. But follow the path above and post results.