Compare following structures:
a: b
{"a": "b"}
a = "b"
It's clear that TOML is using = for compatibility with INI format, but : seems more standard nowdays and is arguably more readable and easier to write.
Maybe TOML should switch to colon syntax before 1.0? Or this is really a taste issue and it should be closed?
Consider these examples. Isn't the colon more elegant?
web = "https://ya.ru"
name = "Yandex"
match = "袧邪泄褌懈" # Regexp to match in response.
tries = 3 # Optional attempts number.
{
"web" : "https://ya.ru",
"name" : "Yandex",
"match" : "袧邪泄褌懈",
"tries" : 3
}
It TOML switched to colons, it could look like this:
web : "https://ya.ru"
name : "Yandex"
match : "袧邪泄褌懈" # Regexp to match in response.
tries : 3 # Optional attempts number.
We're not switching.

Most helpful comment
We're not switching.