Create awesome looking prompt with divided cwd

This is inspired by the look of powerline-shell:
https://github.com/milkbikis/powerline-shell

powerline/config_files/colorschemes/shell/default.json

@@ -53,10 +53,12 @@
 		"gradient6": 160
 	},
 	"groups": {
-		"user": { "fg": "brightcyan", "bg": "darkblue", "attr": ["bold"] },
+		"user": { "fg": "white", "bg": "darkblue", "attr": ["bold"] },
 		"superuser": { "fg": "white", "bg": "brightred", "attr": ["bold"] },
-		"branch": { "fg": "gray9", "bg": "gray4" },
-		"cwd": { "fg": "gray10", "bg": "gray4" },
+		"branch": { "fg": "gray9", "bg": "gray2" },
+		"cwd": { "fg": "gray9", "bg": "gray4" },
+		"cwd:current_folder": { "fg": "gray10", "bg": "gray4", "attr": ["bold"] },
+		"cwd:divider": { "fg": "gray7", "bg": "gray4" },
 		"hostname": { "fg": "brightyellow", "bg": "mediumorange" }
 	}
 }

powerline/config_files/themes/shell/default.json

@@ -13,7 +13,8 @@
 				"name": "cwd",
 				"args": {
 					"dir_limit_depth": 3
-				}
+				},
+				"divider_highlight_group": "cwd:divider"
 			}
 		],
 		"right": [

powerline/config_files/themes/shell/default_leftonly.json

@@ -17,7 +17,8 @@
 				"name": "cwd",
 				"args": {
 					"dir_limit_depth": 3
-				}
+				},
+				"divider_highlight_group": "cwd:divider"
 			}
 		]
 	}

powerline/segments/common.py

@@ -82,8 +82,13 @@ def cwd(dir_shorten_len=None, dir_limit_depth=None):
 		del(cwd_split[0:-dir_limit_depth])
 		cwd_split.insert(0, u'⋯')
 	cwd = [i[0:dir_shorten_len] if dir_shorten_len and i else i for i in cwd_split[:-1]] + [cwd_split[-1]]
-	cwd = os.path.join(*cwd)
-	return cwd
+	ret = []
+	for part in cwd:
+		ret.append({
+			'contents': part,
+			})
+	ret[-1]['highlight_group'] = ['cwd:current_folder', 'cwd']
+	return ret
 
 
 def date(format='%Y-%m-%d'):