Slic3r Manual
Slic3r's plater is powerful and contains many useful options.
The View menu in Slic3r contains a few commands and one configurable preference/option. 







There are two ways to view the coloration in the 3D preview: - Color Toolpaths by Role - This mode uses the regular Slic3r color scheme to pick the colors (default, Solarized, etc).
- Color Toolpaths by Filament - This mode uses the specified colors from the selected Material profiles. 