The socket bonus is 120 haste, so according to what you said, I *should* be using a colored gem :P.
Regardless, simming it now, it gives me a 145 dps loss, so gonna put a delicate in it. Previously, when I got the boots, it simmed at a +300 gain, which (while haste IS overvalued) was enough for me to go for the colored gem. 280 Secondary stats vs 80 main stats.