use crate::*;
impl Tek {
    pub(crate) fn colors (
        theme:    &ItemPalette,
        prev:     Option<ItemPalette>,
        selected: bool,
        neighbor: bool,
        is_last:  bool,
    ) -> [Color;4] {
        let fg = theme.lightest.rgb;
        let bg = if selected { theme.light } else { theme.base }.rgb;
        let hi = Self::color_hi(prev, neighbor);
        let lo = Self::color_lo(theme, is_last, selected);
        [fg, bg, hi, lo]
    }
    pub(crate) fn color_hi (prev: Option<ItemPalette>, neighbor: bool) -> Color {
        prev.map(|prev|if neighbor { prev.light.rgb } else { prev.base.rgb }).unwrap_or(Reset)
    }
    pub(crate) fn color_lo (theme: &ItemPalette, is_last: bool, selected: bool) -> Color {
        if is_last { Reset } else if selected { theme.light.rgb } else { theme.base.rgb }
    }
}