Best Super Game Boy custom color palettes

I've been playing some Super Game Boy recently and you can pick your own custom color palettes. I played around with the palettes and came up with a combination that looks really nice. Here is the code.

6590-0915-8708



You get a yellow pastel color, a green, a blue and the dark color is a brown. The color combination is nice on the eyes and I like it better than any of the preset colors.

Someone actually told me that you can hack the SGB bios so that you can make it default to whatever custom colors or background you want upon boot up.

Does anyone know how to actually do this? Let me know. This is for the SD2SNES SGB or Mister setup.

Thanks.