Matching thread for my matchy matchy outfit

The other day I mentioned that I'd bought a 3 piece outfit--slacks, sweater, long sleeve shirt--the shade of infant formula spit up at the Discovery shop for $3.00. At that price, I figured I could wear it to exercise class, washing the car or for swimming in Lake Erie. However, the slacks are a bit too long. So I dug around in my mother's sewing cabinet, through Neno's (my husband's grandmother born in 1887) wooden spools and those from the years when I used to sew. No matches for my matchy matchy bargain. I'll have to check with the neighbors. A new spool of thread would probably cost more than the outfit.