Using the older version (and what github appears to be using)

  const dict<string, (function(Webserver\RequestURL): Awaitable<void>)> CONSTANT_NAME = dict[];
//00000 000012222221 33333333333333333333333333333333 33333333333333330 4444444444444 0 0000111

In case github updates their version before you had a chance to see it, this is what I see right now.

0 -> red
1 -> black
2 -> green
3 -> purple
4 -> blue

Using the newer version (2.7.0)

The comma behind string is red.
The left angle bracket of the Awaitable is red, but the right one is gray.
The left paren of the (function) is blue, but the right one is gray.
The left angle bracket of the dict is gray, but the right one is white.