Modifiers matching tint:

• soft,
• pale,
• clear,
• permanent,
• neutral,
• light,
• pastel,
• vibrant,
• colored,
• subtle,
• cheerful,
• darker,
• single,

Simple categories matching darker:

• hardwood,
• wood,
• green,
• shade,
• fruit,
• material,
• drink,
• tint,
• paint,
• stone,
• liquor,
• alcohol,
• spirits,
• berry,
• color,
• colors,