Like Pepe said below, each letter spawns in a specific diredtion, so A, or red, always goes up, and you can check that in the beginning, where there are only fe

Like Pepe said below, each letter spawns in a specific diredtion, so A, or red, always goes up, and you can check that in the beginning, where there are only few lines. so the final shape is more important than color. the color is basically irrelevant, except for the fact that maybe you can see which of A, C, G, T appears more times in that dna sequence.