Using more appropriate color for `${expression}` in template strings

[OneMoreJack]

Description

I think using a different color for ${expression} in template strings would make it easier to identify them.

As it displayed here

const hour = 10;
const str = `It's ${hour} o'clock.`;

Steps to reproduce

write code in a .ts file

const hour = 10;
const str = `It's ${hour} o'clock.`;

Version

v6.3.4

Theme

GitHub Dark Dimmed