STOP CHANGING MY BACKGROUNDS TO OFF-WHITE WHEN I EXPORT PICTURES AS GIFS AAAAAAAAAAAAAAA

Seriously. I keep getting rejection notes about my icon backgrounds not being when I upload them when I knew I did a pure white background. And it turns out it's an actual documented problem with the program - as in, there's a help thread about it online so it's not just me. Now I gotta find another way to save pngs as gifs because, other than online converters that may or may not be awful, it's the only program I have that saves as gifs. (But doesn't open them, for some reason.)

EDIT: Another item rejected! I made sure it was white! I'm gonna cry and scream!