I'm writing a script to that will invoke the GIMP batch processor. I've written the GIMP Script-Fu scripts. I've written the PowerShell wrapper. However, I can't get PowerShell to properly pass ...

Here's what I'd like to do: take a directory full of grayscale images, switch them to RGB in the Gimp, add a layer of a certain color, change the layer to screen instead of normal, flatten the ...