update icon to match modern mac styling

main.go

@@ -15,15 +15,11 @@ import (
 	tk "modernc.org/tk9.0"
 )
 
-// this is a default image
-//
 //go:embed noise.png
-var noise []byte
+var noise []byte // this is a default image
 
-// this is the app icon
-//
 //go:embed icon.png
-var icon []byte
+var icon []byte // this is the app icon
 
 //go:generate go run ./filetypes/cmd/gen.go
 var validFileTypes = filetypes.Valid
@@ -137,6 +133,8 @@ func repaint(img *tk.LabelWidget, name string, opt tk.Opt) {
 }
 
 func main() {
+	// TODO: see if there's a way to keep the "default" icon from flashing up on startup
+	tk.App.IconPhoto(tk.NewPhoto(tk.Data(icon)), tk.DefaultIcon())
 	img := tk.Label()
 	repaint(img, "", tk.Data(noise))
 
@@ -231,6 +229,5 @@ func main() {
 	// }))
 
 	tk.Pack(img)
-	tk.App.IconPhoto(tk.NewPhoto(tk.Data(icon)))
 	tk.App.Wait()
 }