The chrysalis or pupa of the Large Tree Nymph Butterfly, formed by the caterpillar and from which the butterfly emerges, is a yellow-gold colour
with black spots and marks. (A pupa is the stage between the caterpillar/larva and the adult insect; a chrysalis is the pupa of a butterfly.)
The attractive yellow-gold chrysalis
It turns dark (transparent) just before the butterfly emerges.
The butterfly has flown
The wings are a bit crumpled when the butterfly first emerges.
Large Tree Nymph Butterflies having just emerged from their chrysalides.