Does anyone know how to copy and paste some code into Notepad++ and preserve all the styles and colors of the pasted text?
Plain text does not have formatting.
What you are asking for is not possible.
If you mean that you are seeing colors/styles in one IDE, that's because the IDE "understands" the format and shows your the text in colors. This doesn't mean that the text itself has associated color.
Notepad++ has syntax highlighting for many languages/formats - select the appropriate one from the Language menu.
Some document formats do have color/styles (exmaples: RTF, HTML).
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