Cherry Pink Headers

So...finally got my rebuilt 318 fired up Saturday late afternoon and with the help of the wife maintaining RPM (2500 - 3000) and keeping a close eye on the gauges for me things were going well until...about ten minutes into it I started to notice in the fading light of day that my newly painted headers were turning slightly pink and getting red in places although some ports were getting brighter than others so I had no choice but to shut her down :cry:

I an still waiting for my new timing light to get here so I set the timing as close as I could by hand but with a little bit of fuel in the carb bowls she just fired right up so I don't think I was a million miles away on the timing.

Any guidance or direction would be greatly appreciated and any advice on timing my 318 no matter how basic is also very welcome.

Bobby.