You can highlight aspects of your image by creating an .svg with Technical Illustrator in 3DVIA Composer.
If I want to bring attention to the nose of this part I can use Line Thickness and Line Colour to do this.
First you select the nose, and then in the Properties tab change the outline options.
For this example, I will change the width of the line to 5 and change the colour to red.
When you go to export your file in Technical Illustrator as an .svg you need to un-check same colour for all actors. If not, it will ignore the colour change you made in the Properties.
There is a really great Youtube video that demonstrates how to do this: