I installed a Kuryakyn HID headlight but it makes the spot lights look yellow.
Has anyone replaced there spot bulbs with something that whitens up the light?

 

The stock passing beams should be an 881 type bulb.
They will be 27 watt , 300 hour , angle base type halogen bulbs.
You could opt for something like an 886 bulb , 50 watt , 200 hour , angle base.
Or maybe an 894 bulb , 37.5 watt , 200 hour , angle base.
Or an 898 bulb , 37.5 watt , 1100 hour , angle base.
All these are clear type bulbs.
I have run 37.5 watt bulbs safely , and they are OK heatwise.
I run Wagner 4415A , 37.5 watt , amber , 300 hour , screw terminal , sealed beams , as they get me noticed better in the daytime (and look neat).
A buddy of mine runs these and likes them , they look pretty neat also.
http://www.eautoworks.com/product-Nokya-23069.htm
So many choices , good luck......
Mick

 

+1 on the Nokya. You might want to rethink your plan, the whiter the light the more invisible you become in daylight!