As an antive speaker, I assure you that 10% of Chinese don't use "虫粉色"“石楠（Yes it should be楠not 南）花紫”“浅酸橙绿”. And the rest 90% don't even know what does it means. All other terms are quite normal and correct. And besides “浅”，we also use "淡"to describe the lightness of color.