No, you're not being too anal! Here is a link to a fabulous ornament and I think you will be interested in learning what she used to paint the images:
Gallery at Splitcoaststampers
I just picked these paints up at Michael's tonight and they were $5.49 for a starter set of 12 colors. I figured it was worth trying, because I'm like you - it bugs me how the marker strokes show with the Sharpies. Hope this helps.
Linda