The color is always `deeper`-looking when new...this will lighten somewhat after a few washes and oxidation from any sun -exposure.... I always give a new system a light shampoo at least once before wearing to get rid of any factory `residue`such as silicon and any dyes used....loose/stray hairs will also come out. If using a curling tongs, make sure the hair is well moistened with water first.... best wishes with your new system/s... Paul.
p.s. you can also `disguise ` and color-difference initially,once the system is bonded on, by misting the hair with water [ growing and system hair] and then spraying on some leave-in conditioner and allowing it to dry naturally....or use a little light gel .. Lòreal ``Invisifix`` is a good one, and will help to `cover`any color-difference initially.