A terminal with a white background

Hello,

I have installed

 jfl@ws0:~$ dosemu --version
 dosemu-1.4.0.0

because I have a dos commandline program that transliterates Thai words into the Latin alphabet.

But I cannot read the terminal. It is black and there are some faint characters there but I cannot read them.

Can I make the background white and the characters black or grey?

Thanks for your help.