This package includes all the Material icons. It does not use Google's Github repo, which is currently out-of-date (19th of January 2020). Instead it uses the data set from the material.io website.
import Color
import Material.Icons as Filled exposing (offline_bolt)
import Material.Icons.Outlined as Outlined exposing (offline_bolt)
Filled.offline_bolt 16 (Filled.Color <| Color.rgb 96 181 204)
Outlined.offline_bolt 16 Outlined.InheritAll the icons are listed on the material.io website.
color.