useOriginalColors property
final
Whether to render the image using its original colors.
If this is false (the default), the image is colorized by merging the color (or, if that is null, the IconTheme color) with the image using BlendMode.srcIn. This is the standard behavior for icons.
If this is true, the color-blend filter is disabled, and the image is rendered with its original colors. This allows multi-colored images, such as brand logos, to be displayed accurately.
If this is true, color must be null.
Defaults to false.
Implementation
final bool useOriginalColors;