getRGBA and setRGBA question

getRGBA will get you a 7 digit number, positive or negative, what does this number mean, what are it’s components ?

I imagine it’s a 32 bit number.

The first 8 bits would be red
the next 8 bits would be green
the next 8 bits would be blue
and the last 8 bits would be the alpha.

Have you ever done hex in html?

put the number in hex, and it will be correctly grouped.
the hex nunmber FF0000FF
would be full red, zero green and blue, and full alpha (or opacity)