I have an iMac (iLamp ;-) w/20" screen, 1.25 GHz G4, 1.5 GB DDR SDRAM running OS X 10.4.8. Purchased in Nov '03 along with 3 yr. Apple Care but am now living in Thailand and don't know if the Apple Care extends this far. Earlier this year (3 months ago) I had this same problem but it just 'went away' after several days. Well, now it's back... My screen displays only green (mostly) blue and some yellow. I have completely lost all the red color from my display. HELP! PLEASE