Is it possible to make a neon-outlined silhouette style game in Unity free?

Like this?

Create a new shader, paste this in. Then assign the Neon-OutlineSilhouette shader to the material attached to your object:

 Shader "Neon-OutlineSilhouette" {
     Properties {
         _OutlineColour ("Outline Colour", Color) = (0.95,0.5,0.5,0.5)
         _OutlineWidth ("Outline Width", Float) = 0.01                                                               
     }
     CGINCLUDE
     #pragma vertex vert
     #pragma fragment frag
     #pragma fragmentoption ARB_precision_hint_fastest
     struct a2v {
        float4 vertex : POSITION;
        float3 normal : NORMAL;
     };
     struct v2f {
         float4 pos : SV_POSITION;
     };
     uniform fixed4 _OutlineColour;
     uniform half _OutlineWidth;
     ENDCG
 
     SubShader {
         Tags {
             "Queue" = "Geometry+100"
             "IgnoreProjector" = "True"
         }
 
         Pass {
             Name "SILHOUETTEINTERIOR"
             Cull Back
             Blend One Zero
             Lighting Off 
             CGPROGRAM
             v2f vert (a2v v)
             {
                    v2f o;
                    o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
                    return o;
             }
                fixed4 frag (v2f IN) : COLOR
             {
                 return fixed4(0.0,0.0,0.0,1.0);
                }
             ENDCG
         }
 
         Pass {
             Name "OUTLINE"
             Cull Front
             Offset 10, 10
             Lighting Off
             Blend SrcAlpha OneMinusSrcAlpha
             CGPROGRAM
             #include "UnityCG.cginc"
             v2f vert (a2v v)
             {
                 v2f o;               
                    o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
                 float3 norm = mul((float3x3)UNITY_MATRIX_IT_MV, v.normal);
                 float2 vOffset = TransformViewToProjection(norm.xy);
                 o.pos.xy += vOffset * o.pos.z * _OutlineWidth;
                 return o;
             }
             fixed4 frag (v2f IN) : COLOR
             {
                     return _OutlineColour;
             }
             ENDCG
         }   
     }
 }