Difference between express tawa and nz tawa

Nz Tawa is a very popular colour that a lot of businesses already have. Express Tawa is used in the ergoplan range and while it is similar there is a difference.

Ranges with NZ Tawa-

On the website Eko, N - Zed, Essentials

Not on website - Accord (close match import. Not as close a match as Eko), Essentials, Classique, Regent,