Purple
A blonde streak, I guess
a black mineral can have a brown streak.
biotite has a colorless streak
a black mineral can have a brown streak.
The streak of petrified wood is black or brown. The streak can also be white.
reddish-brown
Galena's streak is gray, hematite's streak is deep maroon/brown.
It is red. Or brown. Either one. Sorry, I tested and it was brown but websites all say blood-red. So.. idk.. srry.
Black to a brownish black
The streak color of copper is reddish-brown. When you rub a copper sample against a streak plate, it leaves behind a reddish-brown mark.
Hematite has a red streak. It can vary in depth of color, depending on the variety of hematite. Limonite has a yellow-brown (more brown than yellow) streak. But you have to make sure you are streaking the limonite and not an underlying mineral, if the limonite is located on another mineral.
Copper typically has a streak color that appears reddish-brown. This streak color can be seen when copper is scratched on a streak plate to leave a mark.