 
   grey: (menuColor) ->
     # greys all lowercase letters
-    @addNode "Grey", =>
+    @addNode "Shade", =>
       @g.colorscheme.set "showLowerCase", false
       @model.each (seq) ->
         residues = seq.get "seq"

            grey.push index
        seq.set "grey", grey

    @addNode "Grey by threshold", =>
      threshold = prompt "Enter threshold (in percent)", 20
      threshold = threshold / 100
      maxLen = @model.getMaxLength()

      @model.each (seq) ->
        seq.set "grey", grey

    @addNode "Shade selection", =>
      maxLen = @model.getMaxLength()
      @model.each (seq) =>
        blocks = @g.selcol.getBlocksForRow(seq.get("id"),maxLen)
        seq.set "grey", blocks

    @addNode "Reset shade", =>
      @g.colorscheme.set "showLowerCase", true
      @model.each (seq) ->
        seq.set "grey", []
