I like the red ,but not the blue for sure

I would use a mix of orange and purple. Maybe 5" squares of each.

Love the brights orange would be first pick fun fabric.

I would make a pieced strip using all of them.

the orangeish one.....

Reddish orange or purple.

Orange . . . I love bright colors! Great material.

I love the purple, but I think the red/orange actually blends better with the backing fabric.

I like either the lavender or the orange......personally, the lavender is my first choice.

It would pick up the flowers but not overdo......

The orange looks best to me.