Swap page: differance betwen black and grey numbers. [Risolto]

What is the differance betwen black and grey numbers in “Coins that may interest me” and “Coins that may interest him/her”

The explanation is at the bottom of the page: these two columns has two numbers,

• the first (in black) are the items from the swap list that can be wanted according to the wish list,
• the second (in grey) are the total items from the swap list.

Thank you