There’s a wonderful collection of colour portraits for sale at FINEARTAMERICA.COM , mainly by the artist John Springfield (about whom I could find nothing on the agency which displays his work –The Esoteric Art Agency.
All the paintings can be bought as framed prints, posters, greetings cards etc. And the prices range from £18 upwards.
Joel McCrea
Lauren Bacall
Glenn Ford
Buster Crabbe, Jean Rogers
Rory Calhoun
Dan Duryea
Lucille Ball
Fred MacMurray
Kay Francis
Sylvia Sydney
James Cagney
Alan Ladd
Irene Dunne
Ingrid Bergman
Jeanette MacDonald, Nelson Eddy
Dana Andrews
Gregory Peck
Anthony Quinn
Deanna Durbin
Audie Murphy
Vienna's Classic Hollywood 
https://www.imagekind.com/MemberProfile.aspx?MID=8B530FEC-1022-491F-A146-8EA2C8956A2C
Thanks for link.
These are remarkably good, actually seeming to capture more “likeness” than photographs do. The one of Bacall conveys a softer side, reminiscent of Alice Faye.
Yes, lovely portrait of Lauren.
I think you’ll find that they are all copied from photographs.
Here’s the Kay Francis original.
Nevertheless, they are lovely.