Strange LED problem (faulty RGB LED on eBay)

As I wrote the LEDs does light up but only blue and green when connected as a common cathode and red when connected as a common anode.

I know the values are too high, I calculated 75ohms for G&B and 150ohm for R but I didn't have those right there and then so I used what I had using twice as high value for R then G&B. I can't imagine that using too high resistor values would invoke this behaviour, if so please explain how?

Also for testing they are indeed quite bright as is so I guess it would be close to unbearable using R that are 7 times lower. :slight_smile: