Rarest Color that's still in production?

[Takanuinuva]

What color has Lego made the least number of parts in? Other than maersk blue of course. The color has to still be in production.

[Gnac]

PC Black IR, technically a total of 0 (zero) parts. It's used for the IR windows on Power Functions controllers / receivers.

[Mesabi]

According to bricklink's colour guide, http://www.bricklink.com/catalogColors.asp , Chrome Green, Fabuland Orange, and Very Light Orange, are all tied at 1. There are several colours listed as having zero parts produced, (I'm guessing they're a part of non production parts http://www.eurobricks.com/forum/index.php?showtopic=94037) so it depends on how you count it.

[zux]

Maersk Blue is no longer in production.

According to BL Color Guide "Glitter Trans-Neon Green" is the rarest colour currently used. With total number of unique parts equal to one.

[1974]

There are several odd colours only found in watches etc (gear in general). I have two non production colours ; a bright orange and a brown/greenish military looking colour

You should ask the BL forum, there's some serious colour nerds over there

Cheers,

Ole

[tafkatb]

A grand total of one part has been made in Transparent Fluorescent Green with Glitter - and it's definitely still in production; the five sets in which it appears are all from last year or this year. This depends, though, on whether you consider the glitter colors to be separate from their unbedazzled counterparts; the Replacement Parts service lists them separately, but the official color palette doesn't list them:

[anothergol]

"conductive black" technically counting as a color, that would make it 1 (I believe) as well

[mpfirnhaber]

Does "woodgrain" count as a color?

[Vorkosigan]

Given that says "pat pending" I'm guessing that doesn't qualify as IN PRODUCTION.

[mpfirnhaber]

You never know what Lego is up to. They made a big to-do last year about trying to find a new "green" plastic. Maybe woodgrain is the next big thing!