From colored to non-colored

Example 12.2.5 (From colored to non-colored). Conversely, for every colored operad \(\Oo \) and every color \(x \in \Oo ^{\simeq }\) we obtain a non-colored operad \(\Oo _x\) by setting \[ \Oo _x(n) := \Oo (\underbrace {(x, \dots , x)}_{n \text { times}}; x). \] The operad \(\Oo _x\) comes with an obvious inclusion map \(\Oo _x \hookrightarrow \Oo \) of colored operads.