Everybody views Tolkien's works differently. PJ had his own vision.
For example, I didn't have a problem with the mumualiks.
Also the requirements of film had a lot to do with changes made etc etc etc. More there on the
Dumbing it Down Thread
Point is that it seems that a lot of LotR fans are missing the point of the movie. They quibble about Faramir's changed hair colour, the fact that Legolas had blonde hair even though Tolkien does not say what colour hair he has at all, etc.
Please, stop the quibbling about minor things such as light and the roving lighthouse eye. It's getting tiring to read criticisms that are based on the reader's conception.