In general, white is replaced by dark gray, although in TargetColor RGB is green (R - 0, G - 255, B - 0)
Code:
private static MagickImage ChangeWhiteColor(MagickImage Image, Color TargetColor) { Image.Opaque(MagickColor.FromRgb(255, 255, 255), MagickColor.FromRgb(TargetColor.R, TargetColor.G, TargetColor.B)); return Image; } What is the problem?