I couldn't find yellow tomatoes, so used local Jersey and this was very good. The tomatoes get soggy fast, so I removed from skewers when done and kept in the warmer until we ate. I'd love to try it with the yellow, I'm sure they're beautiful!
This is terrific. NOTE!!! Because tomatoes go soft with cooking, thread tomatoes on 2 skewers, instead of one. Early in the season, yellow tomatoes may be hard to find. 1st time I made this, I didn't have white balsamic, so used 1Tbsp regular balsamic and 1Tbsp white wine vinegar plus 1/2 tsp honey. Excellent! 2nd time, used white balsamic, also excellent. Tomatoes cook quickly and may not need 10 minutes. Place in a pan or dish immediately after removing from grill to preserve the great juice.