Quicktime Screen Record -> RED iMovie Import BUG (FIX IT!)
It's been a week now, still no fix.
Once you record a screen recording with Quicktime, import it to iMovie the entire recording is in negative colours (Opposite transparents) when you click auto adjust the colours, you'll notice the recording is in negative colour.
There is a work around apparently, by re-opening and exporting again. Does not seem to work with me (Maverick). Apple seriously, get onto this issue NOW!