1. Apply your desired theme.
2. Tap on a clip to select it.
3. A toolbar will appear at the bottom of your screen. Select Filters on the toolbar.
4. A selection of different filters will appear. Tap on them to switch between them. To remove your filter select None. Make sure the Apply All button in the bottom right of your screen is blue or the filter will only be removed from one clip.
5. Tap Okay to confirm your choice.