diff --git a/SerialPrograms/Source/CommonFramework/ImageTools/ImageFilter.h b/SerialPrograms/Source/CommonFramework/ImageTools/ImageFilter.h
index 44edb637b..e0e0c5204 100644
--- a/SerialPrograms/Source/CommonFramework/ImageTools/ImageFilter.h
+++ b/SerialPrograms/Source/CommonFramework/ImageTools/ImageFilter.h
@@ -56,15 +56,18 @@ std::vector<std::pair<ImageRGB32, size_t>> filter_rgb32_range(
 );
 
 
-//  If `replace_color_within_range` is true, replace the color within (<=) `max_euclidean_distance` of the
+//  If `replace_color_within_range` is true, replace the colors within (<=) `max_euclidean_distance` of the
 //    `expected_color` with `replacement_color`.
 //  If `replace_color_within_range` is false, replace the color outside of the distance with the color `replacement_color`.
-//  Returns the # of pixels inside the distance.
 ImageRGB32 filter_rgb32_euclidean(
     const ImageViewRGB32& image,
     uint32_t expected_color, double max_euclidean_distance,
     Color replacement_color, bool replace_color_within_range
 );
+//  If `replace_color_within_range` is true, replace the colors within (<=) `max_euclidean_distance` of the
+//    `expected_color` with `replacement_color`.
+//  If `replace_color_within_range` is false, replace the color outside of the distance with the color `replacement_color`.
+//  Returns the # of pixels inside the distance.
 ImageRGB32 filter_rgb32_euclidean(
     size_t& pixels_in_range,
     const ImageViewRGB32& image,
diff --git a/SerialPrograms/Source/Tests/Kernels_Tests.cpp b/SerialPrograms/Source/Tests/Kernels_Tests.cpp
index d54d96535..e415bfeba 100644
--- a/SerialPrograms/Source/Tests/Kernels_Tests.cpp
+++ b/SerialPrograms/Source/Tests/Kernels_Tests.cpp
@@ -137,9 +137,12 @@ int test_kernels_FilterRGB32(const ImageViewRGB32& image){
     const size_t height = image.height();
     cout << "Testing filter_rgb32_range(), image size " << width << " x " << height << endl;
 
-    const uint32_t mins = combine_rgb(0, 0, 0);
-    // uint32_t maxs = combine_rgb(255, 255, 255);
-    const uint32_t maxs = combine_rgb(63, 63, 63);
+    Color min_color(0, 0, 0);
+    Color max_color(63, 63, 63);
+    // Color max_color(238, 24, 42);
+    
+    const uint32_t mins = uint32_t(min_color);
+    const uint32_t maxs = uint32_t(max_color);
 
     ImageRGB32 image_out(image.width(), image.height());
     ImageRGB32 image_out_2(image.width(), image.height());
@@ -171,7 +174,9 @@ int test_kernels_FilterRGB32(const ImageViewRGB32& image){
             const Color color(image.pixel(c, r));
             const Color new_color(image_out.pixel(c, r));
             const Color new_color_2(image_out_2.pixel(c, r));
-            bool in_range = (color.red() <= 63 && color.green() <= 63 && color.blue() <= 63);
+            bool in_range = (min_color.red() <= color.red() && color.red() <= max_color.red());
+            in_range = in_range && (min_color.green() <= color.green() && color.green() <= max_color.green());
+            in_range = in_range && (min_color.blue() <= color.blue() && color.blue() <= max_color.blue());
             actual_num_pixels_in_range += in_range;
             if (error_count < 10){
                 // Print first 10 errors: