Please Help,

I'm in the process of trying to close on a condo in a old warehouse. Some of the hardwood flooring in my unit had to be replaced, the problem is the half the floor is the original flooring that was sanded and sealed and is much darker in color then the new flooring that was installed. I'm not happy with the way it looks. Any suggestions????

Can you take some pics and post them here? Not enough info to give any advice!