A:AnswerYes, you can change many different tv settings such as sharpness, tint, contrast and even the color temperature by clicking the menu button, selecting picture and then you'll see your options for the settings you can change.
A:AnswerI'm sure you've answered this by now but this page will walk you through finding the correct code.
https://www.xfinity.com/support/remotes/
For the X1 platform the code is 11712.