"The Upload Noseart button can be used by the squad CO to upload a 64x64 noseart graphic. Graphics are not displayed in the game nor on the web page until they have been reviewed by the HTC staff. The transparency color to use in order to make your noseart blend into the plane is {127, 127, 127}..."
What is a transparency color? What graphics program is being referred to when using the color codes {127, 127, 127}?