Although the main goal is to get F2 SynTex and select the pure line of RT, I am considering other crosses as well. Presumably, the SynTex hybrid contains about 62.5% of the synspilum vieja gene. It is known that combining the genes of vieja synspilum and Midas / Devil makes it possible to obtain a BP hybrid (short body and red color after the fading process). Maybe someone knows and can tell me if 62.5% of the synspilum vieja gene is enough to get a short body and red color when breeding with Midas / Devil? In Thailand I have seen faded and unfaded hybrids that have a parrot body and RT color.