as mentioned above the red base indicates omnis. I also use both the CA-14 omnis and cards, the actual mic body on the cards is longer while the omni mics are shorter and fatter. fat mics = fat bass in this case, i like to make analogies to help me remember things like this.
I dont know if this applies to everyone's CA-14 gear but my cards have the alligator clip on right channel mic pointing to the left while the omnis have the alligator clip on the right mic pointing to the right. i believe my CA-11 cards are like the CA-14 cards in that aspect(alligator clips pointed towards each other if mics are setup L - R).