aluminum foil; tinfoil
Commonly used for kitchen foil; the cross-reference to アルミホイル suggests this is the typical modern meaning.
See also: アルミホイル
I wrapped the potatoes in aluminum foil and baked them in the oven.
silver-colored paper
Refers to paper with a silver sheen, not necessarily metallic foil; less common than the foil sense.
I wrapped the present in silver-colored paper.
I wrapped the rice balls in tinfoil and took them with me.
The chocolate was wrapped in silver foil.