No option to add alt text for images uploaded via Frontpage section

[mwolfindale]

Apologies if I've missed something, but I couldn't find an easy way to add alt text for images uploaded in the Frontpage section of the theme settings (e.g. the slider pictures, marketing icon images).

It would be great if there was an extra input form element or similar for each image, on the Frontpage settings, to allow you to add alt text for those images.