Most cufflinks I see are a bit flashy for me. I guess that's the point of novelty cufflinks but I wouldn't wear those personally. My one pair of cufflinks (aside from the set for my tuxedo) is a sedate pair from Turnbull & Asser. It's really the only pair I need or want.
You can do this but there are so many other better options.
-The jacket will look like an orphaned suit jacket.
-A brown or cream sportscoat will look better with navy trousers.
-This look will look much better inverted (navy sportscoat, light grey trousers.)
These were posted by AAS (An Acute Style) in the WAYWT thread. I really liked his use of the cardigans, I hope he doesn't mind me reposting them. Does anyone think they would be improved if he used a light blue shirt instead of a white shirt? I don't, but am curious what others think.