How can you play Pokemon Blue on the Gameboy Advance SP in color?

When the Game Boy logo appears on the screen, you can choose a colour palette by using certain button combinations.

Up = Brown,

Down = Pastel Mix,

Left = Blue,

Right = Green,

Up + A = Red,

Down + A = Orange,

Left + A = Dark Blue,

Right + A = Dark Green,

Up + B = Dark Brown,

Down + B = Yellow,

Left + B = Greyscale,

Right + B = Inverted.