I found the first 3 lines really quickly and then just stared at the remaining 4 words for ages... Annoyed with myself for giving in and getting purple by default. Once I revealed the answer, it was so obvious!
Connections
Puzzle #440
🟩🟩🟩🟩
🟨🟨🟨🟨
🟦🟦🟦🟦
🟪🟪🟪🟪