Splash Hill for Genesis

[Dolphman]

Here's Hill Top Zone's palette:

The badnik, Rexon uses slot four, which is shared with the mountains & clouds in the background and the flowers on the foreground.
As for the blue distant mountains. That uses slot three, sharing it with the foreground tiles. Slot two is used for the lava.
Since the zone is a palette swap of Emerald Hill Zone. The lava is blue for the waterfalls instead.

It might be possible, since there's plenty of different smashable objects using either of the four palettes in the series.
Which I think the object has to have the selected colours needed.