diff --git a/config/environments/development.rb b/config/environments/development.rb
index ef755a2..a2997a3 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -1,6 +1,5 @@
 require 'active_support/core_ext/integer/time'
 require_relative '../../lib/formatter/colored_formatter'
-Rainbow.enabled = true
 
 Rails.application.configure do # rubocop:disable Metrics/BlockLength
   # Settings specified here will take precedence over those in config/application.rb.
@@ -79,3 +78,5 @@ Rails.application.configure do # rubocop:disable Metrics/BlockLength
   # Colorful Simple Logger Formatter
   config.log_formatter = ColoredFormatter.new
 end
+
+Rainbow.enabled = true
diff --git a/lib/formatter/colored_formatter.rb b/lib/formatter/colored_formatter.rb
index 8e99a61..6b594c7 100644
--- a/lib/formatter/colored_formatter.rb
+++ b/lib/formatter/colored_formatter.rb
@@ -2,19 +2,22 @@ require 'rainbow'
 
 # ColoredFormatter outputs colored message according to severity
 class ColoredFormatter < Logger::Formatter
-  def call(severity, _time, _program_name, message) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
-    full_message = message.is_a?(String) ? message : message.inspect
-    case severity
-    when 'DEBUG'
-      "#{Rainbow(severity).gray.bright.underline.bg(:yellow)} - #{Rainbow(full_message).gray}\n"
-    when 'INFO'
-      "#{Rainbow(severity).green.bright.underline.bg(:yellow)} - #{Rainbow(full_message).green}\n"
-    when 'WARN'
-      "#{Rainbow(severity).orange.bright.underline} - #{Rainbow(full_message).orange}\n"
-    when 'ERROR'
-      "#{Rainbow(severity).red.bright.underline} - #{Rainbow(full_message).red}\n"
-    else
-      "unknown severity #{severity}\n"
-    end
+  def call(severity, _time, _program_name, message) # rubocop:disable Metrics/MethodLength
+    tint = case severity
+           when 'DEBUG'
+             :darkgray
+           when 'INFO'
+             :white
+           when 'WARN'
+             #  :orange
+             '#FFC482'
+           when 'ERROR'
+             :red
+           when 'FATAL'
+             :magenta
+           else
+             raise "unknown severity #{severity}"
+           end
+    "#{Rainbow('╞' + severity.ljust(5) + '╡').bg(:cyan).color(:darkgray)}╠   #{Rainbow(message).color(tint)}\n"
   end
 end