Color Appearance Model 2002 added (see issue 1572). Credits: JDesmis for the core (and hard work!), Hombre for the GUI tuning

rtgui/preprocess.cc

@@ -26,6 +26,8 @@ using namespace rtengine::procparams;
 
 PreProcess::PreProcess () : Gtk::VBox(), FoldableToolPanel(this)
 {
+	set_border_width(4);
+
 	hotDeadPixel = Gtk::manage(new Gtk::CheckButton((M("TP_PREPROCESS_HOTDEADPIXFILT"))));
 
 	lineDenoise = Gtk::manage(new Adjuster (M("TP_PREPROCESS_LINEDENOISE"),0,1000,1,0));