Not my cup of tea (pardon the pun), but in case you are interested. Note the first slide -- run some tests because not all woods react the same. Rustoleum also makes a weathered wood stain, but I've not tried it either.
https://www.familyhandyman.com/painting/how-to-age-wood/?pmcode=IVBJJU103&_cmp=DiyTipsHintsNL&_ebid=DiyTipsHintsNL10202017&_mid=176709&ehid=EBC4D8BEC6F08D97A318788DB78D9A1244AF138A/20/#listicle/2/