Odd spark plug colour (LAC)

[tihol tiholov]

>Pulled the plugs ... been in now for 20k miles. 

Just completed the spark plug longevity test on the VAG 1999  New Beetle
- been in for 192K km.  The car run fine with the old and the new ones,
just was ashamed of keeping them in for so long.  3-electrode NGK if
someone cares, came in from the factory.

>The colour was an orange colour almost like rust

A bit darker brown on these.

TT