feat(config): default no_colors to false

[gelfand]

Default no_colors setting to false.

Why?

Before

Input below would produce no colors in tokio console, tho palette flag is explicitly passed, and no_colors is not explicitly set to true.

tokio-console --palette 256 http://127.0.0.1:6669

---

Input below also would produce no colors in tokio-console, tho COLORTERM is set to truecolor, and no_colors is not explicitly set to true.

COLORTERM=truecolor tokio-console http://127.0.0.1:6669 

---

Also would produce no colors in tokio-console, tho truecolor is explicitly passed.

tokio-console --truecolor http://127.0.0.1:6669

---

So to enable colors you must explicitly set no_colors to false, like so:

tokio-console --truecolor --no-colors false http://127.0.0.1:6669

After PR

Colors are enabled.

COLORTERM=truecolor tokio-console http://127.0.0.1:6669

---

Colors are enabled too.

tokio-console --palette 256 http://127.0.0.1:6669

---

Colors are disabled, because no_colors is explicitly passed, tho COLORTERM is set to truecolor.

COLORTERM=truecolor tokio-console --no-colors http://127.0.0.1:6669

Explanation

I think it's just not really obvious that you need to explicitly pass --no-colors false to enable colors, so it should default to false.

[hawkw]

Thanks for the fix, this looks good to me!