diff --git a/color_example.png b/color_example.png
new file mode 100644
index 0000000..4110247
Binary files /dev/null and b/color_example.png differ
diff --git a/imbandpass.m b/imbandpass.m
index 82c155f..e672417 100644
--- a/imbandpass.m
+++ b/imbandpass.m
@@ -21,7 +21,7 @@
 %stripe Filter option
 addParameter(p,'stripeFilter', 'gaussian', @(x) any(validatestring(x,{'gaussian', 'hard'})));
 %stripe supression width: less than image dimension, 0->None
-addParameter(p,'stripeTolerance', 5, @(x) isnumeric(x))
+addParameter(p,'stripeTolerance', 5, @(x) isnumeric(x)&&x>=0&&x<=100)
 %filter type, default gaussian
 addParameter(p,'filter', 'gaussian', @(x) any(validatestring(x,{'gaussian','butterworth', 'hard'})))
 addParameter(p,'butterworthN', 1)