I just realised that the filler act actually plays a part in the current manga arc.
If you read chapter 282 page 7 , you'll see that they mention zentopia.
Primary:
Sky
Slate
Blackcurrant
Watermelon
Strawberry
Orange
Banana
Apple
Emerald
Chocolate
Marble
Secondary:
Sky
Slate
Blackcurrant
Watermelon
Strawberry
Orange
Banana
Apple
Emerald
Chocolate
Marble
Pattern:
Blank
Waves
Squares
Notes
Sharp
Wood
Rockface
Leather
Honey
Vertical
Triangles