Make my text red using an RGB color (without the help of a color picker)

Make my text blue using an RGB color (without the help of a color picker)

Make my text green using a HEXADECIMAL color (without the help of a color picker)

Give me a fully blue background color (no red or green) AND make me 50% transparent using an RGBA color

Make my background color a shade of orange using a hex color (use a color picker if it helps) AND make me 50% transparent using opacity