Create night_screen.frag

.config/scripts/night_screen.frag

@@ -0,0 +1,13 @@
+precision mediump float;
+varying vec2 v_texcoord;
+uniform sampler2D tex;
+
+void main() {
+    vec4 color = texture2D(tex, v_texcoord);
+
+    color.r *= 1.0;
+    color.g *= 0.75;
+    color.b *= 0.55;
+
+    gl_FragColor = color;
+}