Epic Slaanesh Questor Scout Titan Test Scheme

I'm trying to figure out the scheme for my Slaanesh Titans this week. I'm pretty happy with the purple to magenta armor transition. It's way more blue in the photos than in real life though (leave it to Slaanesh to mess with color balanace). The black bits will be gold, brass or silver but I'm still thinking on the weapon pod looking bits that are white right now. Thoughts?