Improve readability of minimal tags

[pkwi]

Change text colour for minimal tags to improve contrast and readability.

Light theme:

Current

Proposal

Default: no change
Primary: blue2 > blue1
Success: green2 > green1
Warning: orange2 > orange1
Danger: red2 > red1

Dark Theme:

Current

Proposal

Default: no change
Primary: blue4 > blue5
Success: green4 > green5
Warning: orange4 > orange5
Danger: red4 > red5

[llorca]

This means changing the defaults in $pt-intent-text-colors. Colored text and colored icon next to each other will look even more different (2 shades difference vs 1 shade at the moment). We need better intent management in Sass!

[pkwi]

This is for minimal tags only. It doesn't mean we have to change the defaults. I'm sure there are ways to split these two.

[llorca]

No, this isn't actually about minimal tags. It's about the value of $pt-intent-text-colors/$pt-dark-intent-text-colors and will impact any component that's using intent text colors:

@each $intent, $color in $pt-intent-colors {
  &.pt-intent-#{$intent} {
    background-color: rgba($color, 0.2);
    color: map-get($pt-intent-text-colors, $intent);

    .pt-dark & {
      color: map-get($pt-dark-intent-text-colors, $intent);
    }
  }
}