Found the green and blue easy, but yellow was a struggle. Once I was only left with the purples I at least spotted their connection before it was revealed.
Connections
Puzzle #377
🟩🟩🟩🟩
🟦🟦🟦🟦
🟨🟨🟨🟪
🟨🟨🟪🟨
🟨🟨🟨🟨
🟪🟪🟪🟪