SolidColorEffectOverrideBlendState Property

When OverrideBlendState is set then SolidColorEffect will use that blend state. When null (by default) then Opaque blend state is used when Alpha is 1, and PremultipliedAlphaBlend is used when Alpha is less then 1 (in this case the color components are also multiplied with alpha value to produce pre-multiplied colors).

public BlendState OverrideBlendState { get; set; }