Refine banner color scheme and add leading blank line

- "IRB" bold white, version blue, tip commands yellow, directory cyan+bold
- Add blank line before banner to separate from any preceding warnings

Author: st0012

lib/irb/startup_message.rb

@@ -20,6 +20,7 @@ def display
         info_lines = build_info_lines
 
         output = logo_lines ? combine_logo_and_info(logo_lines, info_lines) : info_lines.join("\n")
+        puts
         puts output
         puts
       end
@@ -39,13 +40,17 @@ def load_logo
       end
 
       def build_info_lines
-        version_line = "#{Color.colorize('IRB', [:RED, :BOLD])} v#{VERSION} \u2014 Ruby #{RUBY_VERSION}"
-        tip_line = Color.colorize(TIPS.sample, [:BLUE])
-        dir_line = Color.colorize(short_pwd, [:CYAN])
+        version_line = "#{Color.colorize('IRB', [:BOLD])} #{Color.colorize("v#{VERSION}", [:BLUE])} \u2014 Ruby #{RUBY_VERSION}"
+        tip_line = colorize_tip(TIPS.sample)
+        dir_line = Color.colorize(short_pwd, [:CYAN, :BOLD])
 
         [version_line, tip_line, dir_line]
       end
 
+      def colorize_tip(tip)
+        tip.gsub(/"[^"]*"/) { |match| Color.colorize(match, [:YELLOW]) }
+      end
+
       def combine_logo_and_info(logo_lines, info_lines)
         max_lines = [logo_lines.size, info_lines.size].max
         lines = max_lines.times.map do |i|