UPDATE - NEW VERSION 1.1:
Hi!
For the past couple of weeks I’ve been working on improving this plugin from usability perspective. I’ve added some features, that should make your life a lot easier, and other features, that should allow you to do more with the plugin, and create even better looking effects. You can find them in the new 1.1 release.
Thank you guys for your support on this project. It means a lot to me 
Release notes:
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Added warnings for invalid settings on the widget - There’s a new warning box in the editor, which allows you to see, what’s wrong with you particle system / setup, and allows you to automatically populate left side of the Material Remap List
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Added functionality to automatically generate UI materials - Just right click on your regular particle material and press “Create Niagara UI Material”. This will duplicate your material, automatically change the material domain to user interface, and replace all particle color nodes with vertex color nodes. The conversion isn’t perfect, and should check if it gives you desired effect out of the box, and probably manually adjust the material, but it should give you solid starting point.
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Added setters for widget properties - Useful for creating advanced effects
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Other minor improvements / bugfixes
