While coloring of what ActiveRecord produces in logs definately helps readability and I like it as much as you do, I think those who develop on Windows (and don''t use Cygwin) shouldn''t be doomed to manually disabling it in each and every development instance: config.active_record.colorize_logging = false Of course, this is better (more portable): config.active_record.colorize_logging = false if RUBY_PLATFORM =~ /mswin32/ But the issue here isn''t configurability, but defaults. People who wrote ActiveRecord long ago chose to roll with something proprietary to shells (ANSI coloring codes) and enabled it by default while ensuring it can always be disabled. That''s great, but if a feature doesn''t make sense on a platform, it should be disabled by default on the same. My proposal is to change a line in ActiveRecord base.rb: cattr_accessor :colorize_logging - @@colorize_logging = true + @@colorize_logging = RUBY_PLATFORM.index(''mswin'').nil? This is certainly not the most semantically beautiful line you''ve seen - it would be the first place to use RUBY_PLATFORM in Rails except in Railties and ActiveSupport Kernel extensions - but it may be the right thing to do. Putting a connection adapter in charge of pretty-printing log entries is not the most correct thing in the world, either, but it''s still there :) I''ve felt I have to bring this up here because I knew if I submit a ticket to Trac it would not get that much attention due to its nature. Thanks for listening, -Mislav p.s. this doesn''t affect Cygwin installs; they can still enjoy coloring...