You can improve your mash and make it pop with colors using filters.
Filters are currently available on iOS only if you have a Pro account.
On the iOS app:
From the mash editor, tap on "Filter"
The filters are grouped into named categories—Enhanced, Vibrant, and others—that you scroll through sideways. Tap one to select it.
You should notice the filter applied to your mash preview
Tap the yellow checkmark to finish, or Cancel at the top left to leave the mash as it was.

