Xbox is blue

Really. Well, my 360 anyway has this odd glitch where randomly at startup, the blue and red colours on the screen will get switched around. So I get weird blue-tinted avatars, the EA logo is blue, and so on. Has anyone else experienced something like this? The only way I can fix it is to turn it off and on again, sometimes repeatedly.

It’s a 360 Elite about 3 years old, connected to the TV via HDMI. Haven’t experienced any other problems, and only one RROD that I can recall in that time.

Video chipset going kaput?