Wouldn’t be also correct to say warna warna hijau dan biru?
because it spells out more than 1 colours, we don't need the repetition anymore. Saying "warna - warna" here feels unnatural
Would we not say "Warna itu hijau dan biru"?
When I write "warna" it's false, when I write "Warna" it's correct. I agree we should respect that a sentence starts with a capital letter but why asking it here, when it's not mandatory in all other answers ?