One possible solution, if you want to keep a detailed background, is to Colourise the Environment Background image to give a monochrome effect, allowing the coloured model to standout from the Background image. To try this yourself, follow the steps below:
- Open your Showcase Scene, then go to Appearance menu > Light Environment Library, then right click on the current Environment > select Properties from the flyout menu.
- Once in Properties switch to the Background TAB > Background Image section > expand Show more details.
- Tick on the Colourise option, then either drag the slider to set the colour or double click the colour swatch to pick a more suitable colour.
- Now you can give your Environment a monochrome effect to make the model standout.