flatcap

Put neomutt.desktop in /usr/share/applications/
Put mimeapps.list   in ~/.local/share/applications/mimeapps.list

Check association with: xdg-mime query default 'x-scheme-handler/mailto'

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# set the association by command
xdg-mime default neomutt.desktop x-scheme-handler/mailto

mcginty

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="material_red50">#ffffebee</color>
    <color name="material_red100">#ffffcdd2</color>
    <color name="material_red200">#ffef9a9a</color>
    <color name="material_red300">#ffe57373</color>
    <color name="material_red400">#ffef5350</color>
    <color name="material_red500">#fff44336</color>
    <color name="material_red600">#ffe53935</color>
    <color name="material_red700">#ffd32f2f</color>

pascalpoitras

This configuration is not maintained anymore. You should think twice before using it, Breaking change and security issue will likely eventually happens as any abandonned project.