Fiber based product

A plywood fiber based product, comprising:

• at least one fiber based substrate having a binder composition applied over at least one surface of the at least one fiber based substrate, the binder composition being prepared by using at least polymerizable substance, a crosslinking agent, and a colorant,
• wherein an amount of the colorant is such that the difference between a color of the binder composition and a color of a corresponding binder composition prepared without the use of the colorant, as measured on a Gardner scale, is at least 3 units, and
• wherein a contrast value between the fiber based substrate over which the binder composition has been applied and the binder composition is 50% or less, the contrast value being determined as (Ds−Dt)/Ds*100%, where Ds is the reflection density of the binder composition, and Dt is the reflection density of the surface of the at least one fiber based substrate having the binder composition applied thereon, as measured by reflection densitometry, the average wood failure of the plywood being above 60%.

33-34. (canceled)

(canceled)