[tree view] TreeItem2DragAndDropOverlay - Error: MUI: Unsupported var(--palette-primary-dark) color.

[mtr1990]

Steps to reproduce

use <CssVarsProvider/> for base example

https://mui.com/x/react-tree-view/rich-tree-view/ordering/#only-trigger-the-reordering-from-a-drag-handle

Current behavior

to my knowledge the alpha function will not support vars so this could be the cause of the error

https://github.com/mui/mui-x/blob/master/packages/x-tree-view/src/TreeItem2DragAndDropOverlay/TreeItem2DragAndDropOverlay.tsx

Expected behavior

No error withTreeItem2DragAndDropOverlay

Context

No response

Your environment

No response

Search keywords: TreeItem2DragAndDropOverlay

[michelengelen]

Hey @mtr1990 ... I can confirm this bug and will add it to the board!
Thanks for opening it! 👍🏼

[kzimins-arvatosystems]

Btw could be TreeItem2DragAndDropOverlay also exported from pro package as well?

[flaviendelangle]

#14913 fixes the import issues on the pro package

[github-actions]

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