Missed a few.
diff --git a/Tools/idle/Icons/minusnode.gif b/Tools/idle/Icons/minusnode.gif
new file mode 100644
index 0000000..6cca2bf
--- /dev/null
+++ b/Tools/idle/Icons/minusnode.gif
Binary files differ
diff --git a/Tools/idle/Icons/plusnode.gif b/Tools/idle/Icons/plusnode.gif
new file mode 100644
index 0000000..13ace90
--- /dev/null
+++ b/Tools/idle/Icons/plusnode.gif
Binary files differ