uhm... coloring text?

Hello guys, how can I make to change characters color like:
a = black
0 = pink
etc..
and I have a code like:

print("+---------------+")
print("|This is a box  |")
print("+---------------+")

and I want to +,- and | to be black and text white( i have a code term.setBackgroundColor(colors.blue)for background)
I'm working on a "operating system" so I need help
-sorry for bad english :(/> cheers.

term.setTextColor changes the text color. It works exactly like term.setBackgroundColor, but for text.