Try changing the Display Rendermode to GLSL (requires modern graphics card with OpenGL capability):
Display --> Rendermode --> GLSL
Change the Display Settings:
Display --> Display Settings ...
Choose:
Now change the background to white and remove the axis:
Graphics --> Colors: Display : Background : White
Display --> Axes --> Off
Try AOChalky (for tachyon ray tracer rendering). Glossy material looks nice in snapshot rendering.
Under the Display tab uncheck Depth Cueing and change from Perspective to Orthographic
Use Tachyon module in File Render Controls:
File --> Render ... --> Tachyon
In the same File Render Controls panel add the flag -res xxx yyy defining the number of pixels of the image. For example:
"/usr/local/lib/vmd/tachyon_LINUXAMD64" -aasamples 12 %s -format TARGA -res 1600 1200 -o %s.tga