I have looked through the manual, printed out the 'more extensive' manual (54 pages) from the website, looked through all the menus on the TV - and can't figure out what the colored buttons on the remote are for, or how they are programmed. Out of the box they don't seem to have a function. The only mention I find in the manual is that they select tasks or options - but nowhere do I find how to set these up. Am I just blind?