Change UIView's background color like this *FFFFFF*

On Facebook iOS SDK Docs It reads:

Add the personal information to the SCViewController that displays when the user logs in. Make these changes in SCViewController.xib:

View: In the File Inspector settings, turn off ''Use Autolayout''.

View: Change the main view's background color to FFFFFF.

Question is, In IB, from where can change color of view like this (specifying value). All I know is changing color by using its default picker.

Sorry for the noob Question.

Whoever wrote this documentation at Facebook wasn't looking closely at the Xcode color picker (and you should file a bug and/or notify them of this fact).

First, you need to convert the hex web color into RGB values, which you can do using some utility or site. Here's one: Color Converter at Yellowpipe

And once you have your RGB values, you can then enter these into the Interface Builder portion of your main view, which looks like this (+1 to Tyler for his answer):

_{(source: bynomial.com)}