tk_optionMenu $body.buttons.options menubuttonoptions one two three
pack $body.buttons.options -side left -padx 25 -pady 25
set m [tk_optionMenu $body.buttons.colors paletteColor Black red4 DarkGreen NavyBlue gray75 Red Green Blue gray50 Yellow Cyan Magenta White Brown DarkSeaGreen DarkViolet]
-if {$tcl_platform(platform) == "macintosh"} {
+if {[string equal [tk windowingsystem] "classic"]
+ || [string equal [tk windowingsystem] "aqua"]} {
set topBorderColor Black
set bottomBorderColor Black
} else {
-