I had a similar question a while back. My spruce top looks much darker than many I've seen. It was built in 2012 and I purchased it in 2013, so it's not like it's an old fogey or anything.
I can't find the post where I brought up the question, but it was similar to yours, wondering if they did something extra to my top.
Turns out, after some good discussion and some more research, wood is wood and some spruce is darker than other spruce. I've even noticed that my saddle is a darker parchment in color than other 300s I've seen, and my only assumption is that they chose that saddle color to complement the darker top.