Remove unimplemented color configuration

Will probably end up doing this differently anyway

widgets/account.go

@@ -49,7 +49,7 @@ func NewAccountView(conf *config.AercConfig, acct *config.AccountConfig,
 	dirlist := NewDirectoryList(acct, logger, worker)
 	grid.AddChild(ui.NewBordered(dirlist, ui.BORDER_RIGHT))
 
-	msglist := NewMessageList(logger)
+	msglist := NewMessageList(conf, logger)
 	grid.AddChild(msglist).At(0, 1)
 
 	view := &AccountView{

widgets/msglist.go

@@ -23,9 +23,9 @@ type MessageList struct {
 	store    atomic.Value // *lib.MessageStore
 }
 
-// TODO: fish in config
-func NewMessageList(logger *log.Logger) *MessageList {
+func NewMessageList(conf *config.AercConfig, logger *log.Logger) *MessageList {
 	ml := &MessageList{
+		conf:     conf,
 		logger:   logger,
 		selected: 0,
 		spinner:  NewSpinner(),