I actually took images of totality up to 95 seconds "after" 3rd contact, and could still see prominence' and chromosphere in the 1/8000-second exposures, where there was over 1 percent of the Sun visible. This image was taken immediately after I changed back to the filter and re-focused.

Used a Baader Astro Film which gives a hint of blue color as seen here and in the following images.

(DSC_3649-SharpenAI-Motion-Cropped-01small)