Green LED broken on multiple bulbs

Hi yeelight team.

I really like your software implementation and the open API but unfortunately I cannot say the same about the hardware.
I have bought 7 RGB bulbs during the last 2 years and now 4 out of them have a broken green LED. This means they only produce violet light. I tried resetting them but nothing helped.
It is really disappointing and I’m considering switching to a different manufacturer. I wish I didn’t need to do this but I don’t want to buy new bulbs every year…