diff --git a/CMakeLists.txt b/CMakeLists.txt
index 99ed4f3..1552861 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.25)
 
-set(BLT_GRAPHICS_VERSION 0.11.6)
+set(BLT_GRAPHICS_VERSION 0.11.7)
 set(BLT_GRAPHICS_TEST_VERSION 0.0.1)
 
 project(BLT_WITH_GRAPHICS VERSION ${BLT_GRAPHICS_VERSION})
diff --git a/include/blt/gfx/renderer/batch_2d_renderer.h b/include/blt/gfx/renderer/batch_2d_renderer.h
index 656de87..96c1769 100644
--- a/include/blt/gfx/renderer/batch_2d_renderer.h
+++ b/include/blt/gfx/renderer/batch_2d_renderer.h
@@ -93,9 +93,13 @@ namespace blt::gfx
         // texture to use
         std::string texture_name;
         // color to use
-        blt::vec4 color;
+        blt::color4 color;
         // how much to blend the texture into the color? note blending is always additive!
-        blt::vec4 blend;
+        blt::color4 blend;
+        // should we outline this object?
+        bool outline;
+        // what color should we outline with?
+        blt::color4 outline_color;
     };
     
     class batch_renderer_2d
diff --git a/libraries/BLT b/libraries/BLT
index 86fd4a2..133728b 160000
--- a/libraries/BLT
+++ b/libraries/BLT
@@ -1 +1 @@
-Subproject commit 86fd4a2a9aa18b4dbe8b3688849f7ef81d54f27c
+Subproject commit 133728b64100292779df64436c51c61317f608f5
diff --git a/src/blt/gfx/window.cpp b/src/blt/gfx/window.cpp
index c93b9df..fa6eb8f 100644
--- a/src/blt/gfx/window.cpp
+++ b/src/blt/gfx/window.cpp
@@ -151,10 +151,12 @@ namespace blt::gfx
     
     void loop(void* arg)
     {
-        const auto& data = *((window_data*) arg);
+        auto& data = *((window_data*) arg);
         /* -- Get the current framebuffer size, update the global width/height state, along with OpenGL viewport -- */
         glfwGetFramebufferSize(window_state.window, &window_state.width, &window_state.height);
         glViewport(0, 0, window_state.width, window_state.height);
+        data.width = window_state.width;
+        data.height = window_state.height;
         // TODO: user option for this
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);