Whether you're trying to hide the fact you have used pocket hole screws, or make it obvious with a contrasting species of timber, the Kreg plugs make this possible. These are solid wood plugs, can be trimmed to length and are designed for timbers 1/2" to 1-1/2" thick.
Seven varieties available. Not available for the HD jig.
Solid Wood Pocket Hole Plugs - Maple - 50pc