diff --git a/build.zig b/build.zig
index 1c8aaa9..a71d8b3 100644
--- a/build.zig
+++ b/build.zig
@@ -218,9 +218,10 @@ pub fn build(b: *std.build.Builder) !void {
     });
 
     make_unsigned_apk.step.dependOn(&aarch64_exe.step);
-    // make_unsigned_apk.step.dependOn(&arm_exe.step);
-    // // make_unsigned_apk.step.dependOn(&x86_exe.step);
-    // make_unsigned_apk.step.dependOn(&x86_64_exe.step);
+    make_unsigned_apk.step.dependOn(&arm_exe.step);
+    make_unsigned_apk.step.dependOn(&x86_64_exe.step);
+
+    // make_unsigned_apk.step.dependOn(&x86_exe.step);
 
     const unpack_apk = b.addSystemCommand(&[_][]const u8{
         "unzip",
diff --git a/src/main.zig b/src/main.zig
index 0881843..fdaa984 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -474,7 +474,14 @@ pub const AndroidApp = struct {
                         self.egl_init = false;
                     }
 
-                    c.glClearColor(0.0, 0.0, 0.0, 1.0);
+                    const t = @intToFloat(f32, loop) / 100.0;
+
+                    c.glClearColor(
+                        0.5 + 0.5 * std.math.sin(t + 0.0),
+                        0.5 + 0.5 * std.math.sin(t + 1.0),
+                        0.5 + 0.5 * std.math.sin(t + 2.0),
+                        1.0,
+                    );
                     c.glClear(c.GL_COLOR_BUFFER_BIT);
 
                     c.glUseProgram(program);