What is your preferred shoe colour — brown or black? You may also ask why it matters.

According to Grayson Anderson, head of capital markets at Namibia-focused explorer ReconAfrica, you can glean a lot from a panel of presenters — before they speak — by their footwear.

During a presentation at Frontier’s Africa Energies Summit last week, Anderson walked to the lectern, clad in black shoes, which he said was fitting, given his role in oil and gas finance.