Generate isolated objects on solid background or transparency

Option to control generated results that consist of just a single isolated object image, on either a solid color or even rendered on alpha transparency.

_________________

Despite being call Generative "Fill", it's not always desirable to get results with complete filled backgrounds that look like complete scenes.

Often you want just iterations of object designs or character designs and do not want a fully detailed background complicating the results.

When I'm lucky I can get results with minimal or no background, but it's very tricky, basically random.

Futuristic vehicle design ideas, for instance. I tend to get complete scenes with fully colored/rendered city backgrounds, etc.

My intent is to simply generate concepts for futuristic vehicles to work from, not fully illustrated or photographic scenes/panoramas.