If you are planning on moving and having them convey - I would get something that complements the room and the trim.
Do YOU like the white blinds? If the answer is no? Then find something that works for you and will appeal to more buyers...it's always nice to move into a home that you don't need to run out and buy blinds right away..
Personally? I wouldn't buy the same for all rooms. The master bedroom needs to be (in my opinion) better than the rest....just like the master bathroom should have a better vanity, sink, shower, etc...but that's ME...
I guess I'm not helping you out too much...I would buy what would make the room look the best...not just white...