I once had a fault with my A1200 which gave the display a blue tint
(but not a complete blue).
I sent it for repair with Wizard Developments (Now Computer! if they
still exist) and was told it was a failed VideoDAC.
I also heard Budgie mentioned I think.
Wiggling the RF lead about would cause the display to come back to
full colour which made me think it was just a socket loose.
Another weird colour thing I got was with my old Blizzard 1230-IV. I
was told the old Quantum Daytona GO-DRIVE brand was incompatible with
the 2.5" IDE interface and so it produced a red, flashing screen.
Indicating possibly the ROM was there and then disappearing.
:-D :-D :-D
Nice colours on the Blizzard 1260 bootup though, a sort of vertical
rainbow flicker of all the colours.
What is the PowerPC boot colour?