Linux/Unix based system’s real power lies in their terminal. If you have to work in the Ubuntu’s terminal and you are not comfortable with it’s default color, you can change it easily. Both background color and text color can be changed.
To change the background color of your Ubuntu terminal, open it and click Edit > Profile.
Select Default and click Edit.
In the next displayed window, go to Colors tab.
Uncheck Use colors from system theme and select your desired background color and text color. You can also place an image in the background of your terminal by going to Background tab. To apply an image as terminal background, select Background Image option, and select the image file.
Once done with settings, click Close.
The selected colors will be applied to your terminal instantly. Enjoy!