textFieldDefaultsComponent

Returns a theme-aware TextFieldColors configuration for text fields throughout the sample application. Container and indicator colors resolve from MaterialTheme so fields render correctly in both light and dark mode while keeping the MTN accent for focus and cursor.

• Focused indicator & cursor: the theme accent (MTN yellow in dark, MTN blue in light)

• Unfocused indicator: a muted divider color

• Container background: the theme surface