I love these keycaps. They're fantastic. At first, I was somewhat concerned how the brown would appear on a black frame, but the shades are just right that it makes it a more beautiful whole. Very much appreciate there are bumps on the F, J, and 5 (ten key calculator) to give a tactile notation for your hands to know where they are on the board without lifting and looking. The PBT is fantastic sounding and feeling texture. Thoroughly pleased with this purchase.