The tick overlapped the leading icon on selected chips, reading as a
confusing blob. The solid fill already signals 'on', so hide the
checkmark. Also make the selected label reliably white via an explicit
per-chip style: the global ChipTheme's secondaryLabelStyle was not
applied to FilterChips, leaving dark text on green. Plain attribute/
market chips now share a PlainFilterChip widget; swatch and month chips
just drop their tick.
For help getting started with Flutter development, view the
online documentation, which offers tutorials,
samples, guidance on mobile development, and a full API reference.