tree alias: date & author color cyan

gitconfig

@@ -53,5 +53,5 @@
 	c = commit
 	d = diff
 	s = status
-	tree = log --graph --format=format:'%C(red)%G?%C(reset) %C(yellow)%h%C(reset)%C(blue)%d%C(reset) %C(dim green)%ar%C(reset) %C(white)%s%C(reset) %C(dim black)(%an, %ai)%C(reset)' --all
+	tree = log --graph --format=format:'%C(red)%G?%C(reset) %C(yellow)%h%C(reset)%C(blue)%d%C(reset) %C(dim green)%ar%C(reset) %C(white)%s%C(reset) %C(dim cyan)(%an, %ai)%C(reset)' --all
 	x = annex