Foamed, opacifying elements

A foamed, opacifying element comprising a porous substrate and a dry foamed composition disposed on the porous substrate,

• wherein the dry foamed composition comprises:
• (a) at least 0.1 weight % and up to and including 40 weight % of porous particles, each porous particle comprising a continuous polymeric phase and a first set of discrete pores dispersed within the continuous polymeric phase, the porous particles having a mode particle size of at least 2 μm and up to and including 50 μm;
• (b) at least 10 weight % and up to and including 80 weight % of an at least partially cured binder material;
• (c) at least 0.2 weight % and up to and including 50 weight % of one or more additives selected from the group consisting of dispersants, plasticizers, inorganic or organic pigments and dyes, flame retardants, optical brighteners, thickeners, biocides, fungicides, tinting colorants, metal flakes, and inorganic or organic fillers;
• (d) less than 5 weight % of water;
• and
• (e) at least 0.002 weight % of an opacifying colorant different from all of the one or more additives of (c), which opacifying colorant absorbs predetermined electromagnetic radiation,
• all amounts being based on the total weight of the dry foamed composition.