Brand book: hex color codes don't match RGB values

[bcmills]

I was writing a Playground link¹ for a quick reference to the Go brand colors, and discovered that some of the hex values for some of the colors in the Brand Book don't match the RGB values listed beneath them.

Specificially:

• “Gopher Blue” is listed as #00ADD8, but its RGB value corresponds to #01ADD8.
• “Light Blue” is listed as #5DC9E2, but its RGB value corresponds to #5EC9E3.
• “Fuchsia” is listed as #CE3262, but its RGB value corresponds to #CE3062.

I'm not sure which of the values in those cases is correct, but they should be made consistent either way.

¹https://play.golang.org/p/DbqyvrenYA0

[bcmills]

CC @cnoellekb and @andybons, since this may also be relevant to the website revamp.

[dominikh]

We've always been at war with Eastasia.

[bcmills]

@dominikh, thanks, I typo'd one. Fixed now.

[mdempsky]

The CMYK values seem goofy too: https://play.golang.org/p/pGM0Wa56CAj

But I could be misunderstanding how CMYK works and mapping the brand book numbers into color.CYMK values incorrectly. I have trouble enough with 256-color terminals.