I want to get something like this to look nice:
>> ProductColor.all
=> [#
To add to Alter Lago's suggestion for using AwesomePrint, If you can't/shouldn't/don't want to add the awesome_print gem to your project's Gemfile, do this:
gem install awesome_print
Edit ~/.irb.rc and add this:
$LOAD_PATH << '/Users/your-user/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/gems/1.9.1/gems/awesome_print-1.1.0/lib'
require 'awesome_print'
(Making sure the path and version are correct, of course)