As an ECI user with more than 20 cocottes that include Le Creuset, Staub, Tramontina, and Le Creuset clones, I found this thread a bit on the light side.
ECI is way more than color, and alternatives plug into different cooking practices. Colors can be selected carefully as purposive foundations, to support accent pieces chosen for aesthetics.
I chose dark red as a foundation color–accepting a number of variants along the way. To set them off, I chose Staub basil as a complementary color for Staub grenadine (dark red), and gradated yellow as a brightener for Le Creuset.
Should I desire any accent piece–in any color–I can easily find a very effective staging to bring new energy into my kitchen.