How to use tab with colorful icon

I have colourful icon with many different colours. That I wanna make this to icon tab. Not only two colors. So I can find out how to set with the original colour icon.
Could you please help me, guy!
Thank in advance!

The issue names no file, test, or entry point and asks how to use a multicolored icon in a bottom-navigation tab. First clarify the expected icon behavior and review the library's existing tab and icon usage guidance; done would be a documented, reproducible answer or a clarified implementation request.

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