Maybe try checking an art store that might sell individual sheets from larger reams, rather than packs? I'm pretty sure I've seen construction paper sold in individual sheets or one-color small packs before, though it might end up being in larger quantities than you're looking for.
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fadethecat.livejournal.com at 02:18am on 05/10/2006![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
Maybe try checking an art store that might sell individual sheets from larger reams, rather than packs? I'm pretty sure I've seen construction paper sold in individual sheets or one-color small packs before, though it might end up being in larger quantities than you're looking for.