I had no idea black rice existed until you mentioned it. I imagine that this is likely the same for many others.

Black rice exists, I've seen it in a shop of a friend, though not tasted it.

https://en.m.wikipedia.org/wiki/Black_rice

There are also other food items which have versions that are black in colour, some of which could be not naturally, but by processing them in some way, for example, black garlic.

https://en.m.wikipedia.org/wiki/Black_garlic

Googling your favorite food name with "black" as a prefix could be interesting.

ChatGPT, generate for me a program to automate this, given a list of favorite foods.

Don’t forget red rice! Rice is crazy and my old ideas of wetlands and white rice have been crushed by reality.

Black sticky rice is a favorite dessert of mine. I always have to resist it when I see it on a menu at a Thai restaurant.

What is gō? It is hard to Google.

It’s the Japanese equivalent of “cup” as a measurement unit, and at 180 ml is about 76% of a US cup. Japanese rice cookers are marked and filled in units of gō. You put n gō of uncooked rice in it, and then fill water up to the n mark. One gō is roughly 150 grams of uncooked rice, which amounts to around 530 kcal. Traditionally, a wooden box was used to measure one gō: https://commons.wikimedia.org/wiki/File:Masu,_One-Gō_measure...

A Japanese measuring unit for rice, kind of analogous to "one cup" in US kitchens. Measuring cups distributed with rice cookers are usually one gō in volume even in the US.

Board game. You place one rice grain at the first field and double it for each next field. Eat it all.

"go of rice" works. It's 3/4 cup.