<PackageReference Include="System.Drawing.Common" Version="10.0.0-preview.7.25380.108" />

RGBQUAD

struct RGBQUAD
The RGBQUAD structure describes a color consisting of relative intensities of red, green, and blue.
using System.CodeDom.Compiler; namespace Windows.Win32.Graphics.Gdi { [GeneratedCode("Microsoft.Windows.CsWin32", "0.3.151+58e949951d.RR")] internal struct RGBQUAD { internal byte rgbBlue; internal byte rgbGreen; internal byte rgbRed; internal byte rgbReserved; } }