[ThinkingGuy]

Unsurprisingly, XKCD has already contemplated this:

https://xkcd.com/993/

[Symbiote]

British supermarkets had this long before the XKCD, though they've since reverted to more traditional design.

Search Tesco Value or Sainsbury's Basics for the 1990s version.

[poncho_romero]

Canada too, with all yellow No Name products at Loblaw's.