fill color for host boxes

Command/Map.hs

@@ -100,7 +100,7 @@ nodeId r =
 node :: (M.Map UUID String) -> [Git.Repo] -> Git.Repo -> String
 node umap fullinfo r = unlines $ n:edges
 	where
-		n = Dot.subGraph (hostname r) (basehostname r) $
+		n = Dot.subGraph (hostname r) (basehostname r) "grey" $
 			decorate $ Dot.graphNode (nodeId r) (repoName umap r)
 		edges = map (edge umap fullinfo r) (Git.remotes r)
 		decorate

Dot.hs

@@ -41,13 +41,18 @@ fillColor :: String -> String -> String
 fillColor color s = attr "fillcolor" color $ attr "style" "filled" $ s
 
 {- apply to graphNode to put the node in a labeled box -}
-subGraph :: String -> String -> String -> String
-subGraph subid l s =
-	"subgraph " ++ name ++ " {\n" ++ ii setlabel ++ ii s ++ indent "}"
+subGraph :: String -> String -> String -> String -> String
+subGraph subid l color s =
+	"subgraph " ++ name ++ " {\n" ++
+		ii setlabel ++
+		ii setcolor ++
+		ii s ++
+		indent "}"
 	where
 		-- the "cluster_" makes dot draw a box
 		name = quote ("cluster_" ++ subid)
 		setlabel = "label=" ++ quote l
+		setcolor = "fillcolor=" ++ quote color
 		ii x = (indent $ indent x) ++ "\n"
 
 indent ::String -> String