VB.NET user controls don’t support the Palette and PaletteMode properties, and there is no direct way to simulate these VB6 properties.

The VB6UserControl class in the VB Migration Partner’s support library exposes the Palette and PaletteMode properties, but they always returns Nothing and 0-Halftone, respectively; attempts to assign different value are ignored (or throw a runtime exception if the VB6Config.ThrowOnUnsupportedMembers property is set to True). These properties are marked as obsolete and a migration warning is emitted when these properties are referenced in code.