diff --git a/src/render.cpp b/src/render.cpp
index dbbcc1a..850fe26 100644
--- a/src/render.cpp
+++ b/src/render.cpp
@@ -30,8 +30,6 @@ String8 to_pretty_size(Arena *arena, u64 bytes)
 	return push_str8f(arena, "%zu B", bytes);
 }
 
-// @Speed: instead of calling this function for every displayed byte, prefill an array
-// of byte -> color only once and then just index it at `off`.
 internal
 u32 mem_edit_bg_color_fn(const u8 *, u64 off, void *user_data)
 {
diff --git a/src/render.h b/src/render.h
index 665f676..664e2e6 100644
--- a/src/render.h
+++ b/src/render.h
@@ -13,9 +13,6 @@ struct Viewer {
 
   u64 base_display_addr;
   u64 latest_page_gone_to;
-
-  // has size equal to app.inspected_file.size
-  u32 *byte_colors;
 };
 
 struct Edit_Bg_Color_Data {