Deep Burgundy + Warm Ivory + Black + tiny muted Gold.
It fits the name Egoistic Investor extremely well and works with the structure we already built.
I would not change the layout again right now. Your current screenshot shows a much better foundation. I would do a dedicated visual polish pass: color system, typography, borders, spacing, hover states, section headers, buttons, sidebar and mobile styling—all while leaving your Blogger post engine alone.