There are only a few competitive decks you can't make, and they are: Silence is Golden, Firestall with Red, Dishole with 2-3 Ambers and a proper Air Nymph rush.
Dishole changes its late-game completely with 1-3 Ambers, but is still a good deck with different strengths without them.
Silence is Golden wants at least 5 Goldens, so you're at least 1 off.
Air Nymph rush wants 5-6 Nymphs, but 4 is still a strong deck. 3 is too little to be consistent.
Firestall wants 3 or more Reds if it goes for that, but 2 isn't bad.
So it makes the most sense to get a Blue. Green makes zero sense, btw. It's weak, your bloodline is weak. Shame on your cow.