^^ whoa yeah, cardinal is definitely a 10. the indigo up there didn't seem as wild to me (sorta like a lighter navy?) but ymmv of course. thanks for the links!
here are some more slate/cloud pics in case anyone's still curious, all from leather soul:
mercer in cloud:Warning: Spoiler! (Click to show)
westminster, slate antique:Warning: Spoiler! (Click to show)
epsom closeup of black/slate antique/lavanga suedeWarning: Spoiler! (Click to show)
that's a more subtle contrast between black and slate than i anticipated. LS labeled all of these as "slate antique," what are the differences (if any) between that and just slate calf?