AS3 - Animation over 40k

I know this has been asked before just a few days ago - hence the cut - but I've tried all I could and it doesn't work.

[[ icon made with bases by fallenbeauty101 ]]

I used the animation wizard to import the bases, then I wanted to add a transition effect.

Image transition settings: length is 1.0 secs and 2 frames per second.

It only has 18 frames but it's 102k!!!!!

When I reduce the colors till it's under 40k the quality is horrible and without any transition effect the icon is already 30k. Can you help me out, please?