I'm also a hairstylist. I often explain color to clients by referencing to a painted wall . For instance if you have light hair and apply a darker pigment it will certainly stain it as if it were a white wall and you applied darker paint. Also if you have dark hair and apply lighter and or brighter pigment it will show a hint of color or in some cases make it brighter. If you have a dark wall and apply a lighter color you see little to no change. To c a substantial difference in the shade you have to lighten or if you will bleach the hair. On a dark painted wall you'd have to prime or kilz the wall then paint the color you want. Therefore I suggest extensions small strands clipons are great for at home use. Long short of it might not be such a temp color. Hope this helps.