There exists evidence that Vitamin A is highly toxic when consumed in excessive doses over a long period of time. One of the side-effects of such an overdose is an orange discoloration of the skin.

When I am done with living, I will commit carrot suicide.
Munching and crunching until I am orange and quite dead.
I will leave instructions for the service.
My hair should be fuzzy and dyed a bright green.
My casket open, and lined with orange silk.
My body naked.
Art photographers will shoot color photos.
There will be carrot cake served at the wake.

I am not merely being ridiculous.
I think this idea stems from the Irish tradition of funerals as a celebration of life.
I want the people that loved me to laugh when I am dead, because they can't help themselves, and because they remember the person I was--
Not the wax figurine, the un-me, the one who can't laugh with them anymore.

Note: I may have exaggerated the lethal potential of Vitamin A--but it creates a nice effect, doesn't it?

If you'll just wait a moment, Officer, I have my poetic license right here. :)