CO food is good, service is another story.
UA catering is at the bottom of the pack, slightly above US airways. DL, CO, and AA are all better than UA, by far.
Remember though, the reason why CO is able to "splurge" on catering is because they own their own catering company, Chelsea, which cuts the cost down in half.
Once CO surrenders to become UA, you can expect to see meal improvement
Thanks for the pics though!