Mono-ink Infinity deck ideas?

I am playing in a mono-ink Infinity tourney Friday evening and trying to decide what to run with. The rules are standard Infinity other than only allowing one ink color in your deck, meaning also that you can’t run dual-ink cards. I’d love to get input in ideas/what to play.

So far in my experimentation:

Low-tier: Ruby, Amber, Sapphire Mid-tier: Steel High-tier: Amethyst, Emerald

Ruby is out due to lack of good card draw.

Amber is tough on card draw, too, and there aren’t enough good/great Amber songs to fuel Ariel.

Sapphire has card draw with Hiram/etc and I can make a fun item deck with it. But: every build I have tried gets demolished by anything vaguely aggro.

Steel has great removal, curves well, and has draw/hand disruption. But it also has no ramp or singers. So far I’ve messed with a SteelSong variant that basically just replaced all the Amber cards with other good Steel cards (Doc, Pluto, etc). It seems like the deck’s success is pretty much entirely determined by whether I hit a 1/3 shift line. I feel like there must be a better idea?

Amethyst has the best 1-drops and draw, bounce, cheeky lore, and now even some usable removal. It seems like it’s lacking some endgame? But it also seems like it’d be real tough to stand up to for anything other than maybe Emerald.

Emerald has Diablo and PJ, all kinds of solid aggro/discard support, and disruption/removal from Chromicon, Muses, You’re Welcome, and MMS. I think just the idea Diablo singing MMS is absolutely deflating, lol.

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So: any other good ideas?