I was building a blue painting when I picked up a bottle of "citrus" green instead, and placed a droplet into the blue. Yikes! It pushed the drying blue into a hard dark edge, but looked kind of interesting. Then I intentionally dropped several drips of "cranberry" onto the blue and formed a little blue island surrounded by red.
Intentional is not a word I associate with alcohol ink. Nor is deliberate. It's more like happenstance, WTF and whodathunkit.