Easy way to turn on classic invert in iOS11?

I used to use what they now in iOS11 call "classic invert" to view negatives from my analog camera. All it took was to press the home button three times and i had a quick view of what my photographs actually look like. But now all that does is to invert everything BUT the picture i wanted in inverted colours. Is there a way to set "classic invert" as the accessibility shortcut instead of the "smart invert"? Or do I need to go into the settings every time i need the "classic invert"?

I tried even telling Siri, but she lets me do only "smart invert".