Simple parameter based blink shader in Unity

BlinkShader

Shader "Custom/Blink" {
  Properties {
		_MainTex ("Base (RGB)", 2D) = "white" {}
		_Blink ( "Blink", Float ) = 0
	}
	SubShader {
		Tags { "RenderType"="Opaque" }
		LOD 200
		
		CGPROGRAM
		#pragma surface surf Lambert

		sampler2D _MainTex;
		float _Blink;

		struct Input {
			float2 uv_MainTex;
		};

		void surf (Input IN, inout SurfaceOutput o) {
			half4 c = tex2D (_MainTex, IN.uv_MainTex );
			if( _Blink == 1.0f ) 
				c *=  ( 0.5f + abs( sin( _Time.w ) ) );
			o.Albedo	= c.rgb;
			o.Alpha		= c.a;
		}
		ENDCG
	} 
	FallBack "Diffuse"
}

i added simple code for tint color and no alpha

Shader "Custom/Blink" {
Properties {
_MainTex ("Particle Texture", 2D) = "red" {}
_Blink ( "Blink", Float ) = 0
_Color("Color", Color) = (1,1,1)
}

SubShader {
     Tags {"RenderType"="Transparent" "Queue"="Transparent"}
    Blend SrcAlpha One

    CGPROGRAM
    #pragma surface surf Lambert

    sampler2D _MainTex;
    float _Blink;
    float3 _Color;

    struct Input {
        float2 uv_MainTex;
    };

    void surf (Input IN, inout SurfaceOutput o) {
        half4 c = tex2D (_MainTex, IN.uv_MainTex );
        if( _Blink == 1.0f ) 
            c *=  ( 0.5f + abs( sin( _Time.w ) ) );
        o.Albedo    = c.rgb*_Color;
        o.Alpha     = c.a;
    }
    ENDCG
} 
FallBack "Diffuse"

}