Byline: Randall Rothenberg Brad Brinegar sent me a amiable color diagram a few weeks ago.

Byline: Randall Rothenberg

Brad Brinegar sent me a amiable color diagram a few weeks ago. Called ``the cubist olive,'' the illustration depicts a large gray square. In the upper right corner sits a earnestly smaller green square, within which resides an equal tinier red square. The gray set forths the 500 largest ad agencies in the U the recent the 5% of those that contend on the basis of their creative crops And the red, Mr. Brinegar wrote me underscoring something he'd told me a not many days earlier, ``is the five or six agencies that establish ...