Yes, that's right, there's footage of Warhol demonstrating the Amiga's graphical abilities, although there was a tense moment when he uses a buggy flood fill routine to colour Debbie Harry's hair in the image he's working on, and the Amiga people are worried that the Amiga's about to guru on them and a few thousand witnesses in the audience... but luckily, it worked out fine.
Ironically, his subsequent works on the Amiga were thought lost or unrecoverable for decades until the delicate, ageing disks were read:
https://www.bbc.co.uk/news/technology-27141201