'Run this once before using, it is just to set the shortcuts (you can do this manually as well but for ease of use this is simpler)
Sub SetShortcutKeys()
With Application
.OnKey key:="^+K", Procedure:="turn_Black" 'CTRL+SHIFT+K--turn cell black
.OnKey key:="^+L", Procedure:="turn_Blue" 'CTRL +SHIFT+L--turn cell blue
End With
End Sub
'this will turn the entire selection black...this is not undoable so be careful
Sub turn_Black()
Selection.Interior.Color = vbBlack
End Sub
Sub turn_Blue()
Selection.Interior.Color = vbBlue
End Sub