Annoying. 빨간색이에요 should be accepted surely? This form incorrect on more than one exercise here.
strawberries have left the chat
But it doesn't say that every red food is spicy :p
Kim Taehyung added strawberries
빨갛다 > 빨개요 (ㅎ irregular) / 빨간 red (something) / 빨강 = 빨간색 (noun)
What about my poor 토마토 수프? That's isn't spicy!
Is it more awkward to say "매운 음식이 빨개요"?