Transparent Menu

Hello, I have this theme installed on lots of websites, I am having trouble trying to get around one thing with the transparent menu, as you see here https://beneficiosdelpilates.com/ the manu is not transparent but here for example https://beneficiosdelpilates.com/pilates-vs-yoga-%e2%98%80%ef%b8%8f-cual-es-mejor/ it is transparent and it looks much better,
my question is, is there any way to have the transparent menu on the home page as well?
thanks!

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