Is there a model of laser now that kills light colored hair too? For areas with dark + lighter mixed to get full clearance?

Ive been researching different laser clinics, I saw vague mentions here and there saying they can now treat lighter hair colors with new models of laser (not like platinum blond, but maybe darker blond-- basically just, lighter than the previous ability to only get very dark hairs)
How true this is? I know over time technology improves, so it’d make sense. Has anyone been treated who has mixed very dark and lighter hairs and experienced it? What type/model?

My dream is to not have to worry about shaving my legs at all, or maybe one little part. But I realized when I run my hand down the large areas that look cleared of hair, its not smooth… so I guess I have some lighter hairs even though I always assumed I only had dark.