Which Colour Puffles don't you need a membership for?

In the game Club Penguin, the only color Puffles that do not require a membership are the red and blue Puffles. These Puffles can be adopted by all players, while the other colors, such as green, pink, purple, and more, are exclusive to members. This distinction encourages players to explore membership benefits while still enjoying some aspects of the game without a subscription.