<c:color> syntax does not work for color aliases.

[ghost]

Hopefully the title suffices but here's an example below:

<pink>this is pink</pink> <c:pink>and this is...</c>
not pink
<red>this is red</red> <c:red>and this is...</c>
weird bug

Styled Chat: 2.2.3+1.20.1
Styled Nicknames: 1.2.1+1.20

[Patbox]

Technically it is intended as <c:X> tag takes only vanilla color values, and color tags are made by hand as proxies

[sakura-ryoko]

the <c:[X]> aka the color:[X] tag is used as follows using the RGB Hash Codes:
<c:#FFFFFF>put your text here</>
Also, red and pink are existing color nodes, where "pink" isn't actually pink, but it is coded as an alias of <light_purple>