Well, given how I had to place the splines (narrow lid where I was limited on size to avoid hitting the floating panel...I know, poor planning!), I used walnut to avoid calling too much attention.  In other situations I agree that the contrast is a good design feature.

In the past I put glue on the splines, but this time I put the glue in the slot and the used a small brush to ensure glue on all surfaces before sliding in the spline.  That seemed a little less messy.  Since I'm getting so much helpful info - is there any recommendations on how everyone does the glueup?

This is the saw I use.  I believe it is designed for this use with a flat surface/teeth.