[mitmproxy] fix of transparency on syntax-highlighted content when `console_palette_transparent: false`

palette_fix.py

from mitmproxy import ctx
from mitmproxy.tools.console import palettes

_orig_palette = palettes.Palette.palette

def _patched_palette(self, transparent: bool):
    lst = []
    if transparent:
        highback, lowback = None, None
    else:
        if self.high and self.high.get("background"):
            highback = self.high["background"][1]
        else:
            highback = self.low["background"][1]
        lowback = self.low["background"][1]

    for i in ["", *self._fields]:
        style = i or "text"
        if transparent and i == "background":
            lst.append(["background", "default", "default"])
            continue
        v: list[str | None] = [i]
        low = list(self.low[style])
        if lowback and low[1] == "default":
            low[1] = lowback
        v.extend(low)
        if self.high and style in self.high:
            v.append(None)
            high: list[str | None] = list(self.high[style])
            if highback and high[1] == "default":
                high[1] = highback
            v.extend(high)
        elif highback and self.low[style][1] == "default":
            high = [None, low[0], highback]
            v.extend(high)
        lst.append(tuple(v))
    return lst


class FixOpaqueContentview:
    def load(self, loader):
        palettes.Palette.palette = _patched_palette
        ctx.log.info("Patched console palettes to honor opaque bg for unstyled content")

    def done(self):
        palettes.Palette.palette = _orig_palette
        ctx.log.info("Restored original console palettes")


addons = [FixOpaqueContentview()]