techfile bypass/defaults

[nmz787]

It would be nice to have an option to bypass the techfile requirement.... i.e. just choose a GDS file and then show all layers, allowing the layer choosing GUI window to deselect as needed. Or a way to specify which GDS layers to draw, but auto-choose the colors. My reason is that I have too many PDKs (many are also in active development) that I am learning about, and as a "newb" converting the techfiles is a major enough hurdle when I'm really just wanting a quick 3D view to get an overview of a cell's architecture.