Thank you Saga Lout.
I want to give my Tracfone Alcatel 205 to a womens' shelter or something, and a "wipe data / factory reset" is just what I was looking for.
No luck with Vol-Up and Power on my phone. I got into the Factory Reset screen by holding down the "*" asterisk button and then holding down the [red] power button.
I confirmed it worked because all my contacts got wiped. And the default color scheme came back. And my Surfer-Cat wallpaper went away.
It's a terrible phone, receiver sounds bad, texting is an exercise in tedium, even with practice. But I used it until I got a great Moto hand-me-down. The womens' shelter deserves better.