       @model.each (seq) ->
         seq.set "grey", grey
 
-    @addNode "Grey selection", =>
+    @addNode "Shade selection", =>
       maxLen = @model.getMaxLength()
       @model.each (seq) =>
         blocks = @g.selcol.getBlocksForRow(seq.get("id"),maxLen)
         seq.set "grey", blocks
 
-    @addNode "Reset grey", =>
+    @addNode "Reset shade", =>
       @g.colorscheme.set "showLowerCase", true
       @model.each (seq) ->
         seq.set "grey", []

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

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


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