message: change named colors to const
diff: @@ -15,11 +15,11 @@ use crate::*;
  /// Create a `static` `HSluv` color from a color name, hue, saturation and lightness.
  macro_rules! color {
  ($color:ident => $h:literal, $s:literal, $l:literal) => {
  - pub static $color: HSLuv = hsluv!($h, $s, $l);
  + pub const $color: HSLuv = hsluv!($h, $s, $l);
  };
  }
  -pub static TRANSPARENT: HSLuv = hsluv!(0, 0, 0, 0);
  +pub const TRANSPARENT: HSLuv = hsluv!(0, 0, 0, 0);
  color!(GRAY_0 => 235.5, 22.1, 98.2);
  color!(GRAY_1 => 248.2, 18.5, 96.2);
  