Tweak rainbows slightly

src/Utils.cpp

@@ -556,7 +556,7 @@ utils::markdownToHtml(const QString &text, bool rainbowify)
                                 // Use colors as described here:
                                 // https://shark.comfsm.fm/~dleeling/cis/hsl_rainbow.html
                                 auto color =
-                                  QColor::fromHslF((charIdx - 1.0) / textLen * (5. / 6.), 1.0, 0.5);
+                                  QColor::fromHslF((charIdx - 1.0) / textLen * (5. / 6.), 0.9, 0.5);
                                 // format color for HTML
                                 auto colorString = color.name(QColor::NameFormat::HexRgb);
                                 // create HTML element for current char