Yellow face and Golden face budgies

There's actually three. Yellowface type 1, yellowface type 2, and golden face (Australian yellowface). The two yellowface have the same lemon yellow face, but the amount of suffusion is different... Yf1 single factor has a yellow face and no body suffusion. Yf1 double factor has no yellow and looks like a normal blue series bird. Yf2 single factor has a yellow face and light body suffusion so it looks aqua. Yf2 double-factor has far less body suffusion and looks a lot like a yf1 single factor, but as it molts it progressively gets suffusion through the body. Goldenface acts the same as yf2, only the yellow is bright yellow rather than lemon yellow.