I got plenty of colors too. I have found that light intensity plays a role in what color shows up. I got some really strong lights a set of 212w Taotronics and a 2 bulb t5 set. I sometimes run them separately. When I run the leds I get maroon colored Coraline. I have been running just my 2 bulb lately and I am getting lighter purple colored and some darker purple color.
Before I got the leds I was developing green Coraline.
Looks like yours is coming along really nicely.