The Microsoft Office 2019 app library is very displeasing. A few applications have different colors, but all others (including Word) are simply blue. I think all major apps should have their own color.

It would take a simple ten minutes in Photoshop to change the look of the icons and a single small patch to put them out as such.

(Original images: https://dribbble.com/shots/5677309-Free-Microsoft-Office-365-icons https://www.digit.in/software/microsoft-unveils-new-icons-for-office-365-suite-of-apps-44986.html