In fact, this smells like an intentional leak by someone on Color's side in an effort to boost their price to some other potential buyer (counting on Apple's legendary no-comment streak to bolster the appearance of the rumor).
Think about the last time something leaked about an Apple acquisition before the deal was closed...right, never! In fact, Apple has notoriously remained quiet about acquisitions even after they close. They are not a company that does a triumphal sounding press release for every acquisition.
Yeah, occasionally you get leaks about Apple products. You think those aren't intentional? You think Apple's not leaking just enough about their upcoming products to keep people's interest. That's their game.
But leaking information about an acquisition? What does that gain Apple? If Apple really did want to purchase Color, leaking that information would only raise their price. No, the only entity here that benefits from a leak like this is Color.
If the rumor turns out to be true, the fact that details of an acquisition were leaked is much more concerning to me than the particulars of what company and for how much.