At present, there are no cards which specifically affect cards based on their ink colour, however, only have one or two of the ink colours in your playing deck, so it is important to pay attention while formulating future strategies
The Crab Queen Rarity: Rare TYPE: Legendary Creature SUBTYPE: Crab Human CMC: 4 Mana cost: USD: $15.00 EUR: 0.00 TIX: 0.00 EDHREC RANK: - (1/6) Whenever The Crab Queen attacks, create a token that's a copy of one of the following at random: Skitter Eel
Probably works best in Group Pain decks like Mogis, God of Slaughter and Rakdos, Lord of Riots, though those decks have access to Black so you already have great card draw
Although Fateful Absence sees play in 60-card formats, the risk of giving them a Clue token is mitigated in EDH, so its a stronger spot removal spell in that format
Cruelclaws Heist I must admit my bias here: Bloomburrow s Cruelclaw's Heist is one of my favorite Standard cards