Credit author of Color Harmonies...

include/reptorian.gmic

@@ -16903,7 +16903,7 @@ u "{$1}"\
 "{$16}"\
 "{$17}"
 #@gui Color Harmonies: fx_rep_color_harmonies, fx_rep_color_harmonies_preview(0)
-#@gui :_=note("<b>This is a demo filter!</b> This means it's only used to demonstrate capability of G'MIC.")
+#@gui :_=note("This is a recreation of the <a href="https://forums.getpaint.net/topic/29332-color-harmonies-tools-effect/">Color Harmonies plugin for Paint.NET.</a> which was made by <a href="https://forums.getpaint.net/profile/79572-midora/">midora</a> and Martin Osieka.")
 #@gui :_=separator(),_=note("<b>Reference Point</b>")
 #@gui :Hue=float(50,0,360)
 #@gui :Saturation(%)=float(100,0,100)