From Worlds Collide Wiki - Final Fantasy VI Randomizer

Remove Flashes
Remove light flashes from event and battle animations. Recommended for people with sensitivity to lights or strobing effects.

Flash animations not changed.

Worst (-frw)
Removes only the worst flashes from animations. Ex: Learning Bum Rush, Bum Rush, Quadra Slam/Slice, Flash, etc.

Most (-frm)
Removes most flashes from animations. Includes Kefka Death.

High-Contrast World Minimap (-wmhc)
If enabled, makes the world minimap opaque and increases the contrast for better visibility.

Alternate Healing Text Color (-ahtc)
Makes healing text blue, to be able to distinguish easier from damage text.