Lilac Seersucker Blazer styling

Time for my annual trip to the horse track, where I try and one up my outfit from previous years

I have been playing around with different blazers

Came across this Lilac Seersucker blazer which will be here Monday.

Trying to figure out how to style it. What color pants/shirt, possibly even a pocket square

Brown belt and Brown Allen Edmond Veronas

Any suggestions or ideas? Think Kentucky derby