After buying two stoves and knowing what I know now, I would just go into an appliance store and say to the salesman look salesman, I’m interested in color. What do you know about the appliances you sell and colors they come in?
Some dealers offer custom colors for an up charge but they do not promote it. I wouldn’t have known I could get a Periwinkle colored stove without seeing one in an appliance store. These appliance manufacturers don’t promote their option for custom paint colors.
Another option is to get a Home Depot range in white or stainless steel or whatever standard finish you want, and buy aftermarket knobs in bright colors. That is much more affordable and it’s really cute.