Fix variables

lib/uplot/command/parser.rb

@@ -1,14 +1,18 @@
 module Uplot
   class Command
     class Parser
-      attr_reader :command, :params, :main_parser, :sub_parsers
+      attr_reader :command, :params, :main_parser, :sub_parsers, :delimiter, :transpose, :headers
 
       def initialize
         @sub_parsers = create_sub_parsers
         @main_parser = create_main_parser
         @command = nil
         @params = Params.new
-      end
+
+        @delimiter  = "\t"
+        @transpose  = false
+        @headers    = nil
+    end
 
       def create_default_parser
         OptionParser.new do |opt|
@@ -51,7 +55,7 @@ module Uplot
             params.padding = v
           end
           opt.on('-c', '--color VAL', 'color of the drawing', String) do |v|
-            params.color = v =~ /\A[0-9]+\z/ ? v.to_i : v.to_sym
+            params.color = v =~ /\<[0-9]+\>/ ? v.to_i : v.to_sym
           end
           opt.on('--[no-]labels', 'hide the labels', TrueClass) do |v|
             params.labels = v