Hi, was thinking you could perhaps try duplicating your final image/animation layer and applying a “Linear Colour Key” (under effects) to it so it only glows a certain colours, use the eyedropper to select the green you want to key out, set it to “use chroma”, takes a bit of playing around to get what you want, then also “blur” the layer a bit too so you dont get ugly edges! Then create an adjustment layer in-between your Keyed layer and your final image/animation layer and apply a glow to it. Set the adjustment layer to “Tack Matte – alpha inverted” (you’ll find it under the layer menu at the top). The top “colour keyed” layer will also turn its visiblity to “off” automatically which is good because you just want the adjustment layer to use it basically as an alpha channel, here’s how the order of your layers might look…..
1) ROBOT ANIMATION LAYER – Effect “Linear Colour Key” – Eyedrop Green to key out”, add Fast blur too?
2) ADJUSTMENT LAYER – Glow. Set “Track matte” to Alpha Invert
3) ROBOT ANIMATION LAYER – Leave as is
Cheers