White vinegar and water seems to have worked! It's about 85% better than it was. There's still a bit left, but it's hard to see now. I applied some renovateur after 3 days of scrubbing with the water and vinegar solution.
Ugliest Alden's ever. MDubs may need to add these to complete his collection of unicorns.
Wore my Tricker's out to a bachelor party weekend and unfortunately something spilled on them (no idea what). I used renovateur and have brushed them a fair amount. Any ideas on what I can do to get rid of the rest of the spots?