acetone to be used to deal with colours fade away.

[timoinsects]

acetones were used for what?
keep colour of insects specimen? Orthoptera for example,some of them are green colour.very bright but possible the colour fade away after you kill them. so the specimens' colours are not their original colour.
so,acetones were used when killing them? take a "acetone bath" soon after killed them? but what if take a "acetone bath" after their colour have faded away?(from green into yellow),then use acetone,will the colour changes from yellow back to green??if the specimen are still wet,not dried. and what if the specimens have dried? if to deal with dried specimen the acetone does not work?

[lucanidae25]

I mainly use acetones for the Buprestidae from Australia and some of the Chrysochroa sp from Asia. Anything that has yellow would need acetones to get the oil out of the beetles and stop the yellow from going brown. I will keep changing the acetone untill it's clear, only then I will take it out and dry them.

[Adam Cotton]

You can't use acetone to preserve colours in butterflies, and you certainly can't use it to restore faded colours. Particularly green butterfly wings can be discoloured by acetone, which is used in Lepidoptera to degrease specimens.

Adam.