Color mappings do not match Powershell Core ansi escape code mappings

[DanielFallon]

It looks like the color mappings in this repo between powershell's colors and ansi color codes do not match those used by powershell's virtual terminal system.

For example, when Write-Host -ForegroundColor Magenta "test" is executed, powershell's virtual terminal emits ESC[35;1mtest (also known as brmagenta or High Intensity Magenta). The mapping in the readme file and code lists the mapping as: magenta -> magenta.

Below are the correct mappings in full:

termcol	Powershell
black	Black
red	DarkRed
green	DarkGreen
yellow	DarkYellow
blue	DarkBlue
magenta	DarkMagenta
cyan	DarkCyan
white	DarkWhite
brblack	DarkGray
brred	Red
brgreen	Green
bryellow	Yellow
brblue	Blue
brmagenta	Magenta
brcyan	Cyan
brwhite	White

[DanielFallon]

oh, maybe I'm just noticing a typo in the readme, paired with a misconfiguration of gnome-terminal

The readme shows ESC[0;30m -> brblack which should instead be ESC[1;30m -> brblack