Overlay the user Shaders/ over the shared one to avoid copying files

Data/Sys/Shaders/acidmetal.glsl

@@ -0,0 +1,21 @@
+uniform sampler2D samp9;
+
+out vec4 ocol0;
+in vec2 uv0;
+
+void main()
+{
+	vec4 c0 = texture(samp9, uv0);
+	float red   = 0.0;
+	float blue  = 0.0;
+
+	if (c0.r > 0.15 && c0.b > 0.15)
+	{
+		blue = 0.5;
+		red = 0.5;
+	}
+
+	float green = max(c0.r + c0.b, c0.g);
+
+	ocol0 = vec4(red, green, blue, 1.0);
+}