The edges of my fingers are starting to faintly give off the color off my ink, and even change when I change colors, should I be concerned, or is it normal? (I'm an inkling)
Colored tips are completely innocuous, no worries! ᔦ ^^ ᔨ It's a merely aesthetic condition that may be temporary or even permanent, with no relevant physical side effects. They tend to be more commonly seen on octolings, however inklings can develop colored tips too, as seen in Frye Onaga (who happens to likely also have a Dual Ink Coloration, though case still applies). They may come alongside other conditions (Such as Leaking Hands for example), usually related to form-shifting, but as long as they feel fine to the touch and don't hurt in any way then everything should be fine.
Fun fact: Some people actually even manually ink their tips as to emulate this condition, purely for aesthetic value!