Mohibuae made the following 4 translations:

• '&Theme' as '&قالب' in SumatraPDF / ar
• 'Dark' as 'مظلم' in SumatraPDF / ar
• 'Light' as 'خفيف' in SumatraPDF / ar
• 'Darker' as 'غامق' in SumatraPDF / ar