Constant palette::gradient::named::PLASMA

pub const PLASMA: Gradient<LinSrgb, [(f32, LinSrgb); 256]>;

New matplotlib colormap by Nathaniel J. Smith, Stefan van der Walt, and (in the case of viridis) Eric Firing. This gradient is perfectly perceptually-uniform, both in regular form and also when converted to black-and-white. The colormap is released under the CC0 license public domain dedication.