The HUD airspeed caret in the iniBuilds A350 is filled in with solid green, however the airspeed caret in the real aircraft is not filled in, as it is made up of 3 lines in a triangle shape. This is important because the current airspeed line is not visible inside the caret with the solid color, making it hard to discern whether you are at the correct airspeed or not - see pics. For reference, the iniBuilds A350 PFD does have the caret drawn correctly with 3 blue lines making up the caret triangle - thanks!