title: Alpha blending a red, blue, and green image to produce an image tinted to any rgb value?
body: <p>Basically, I have a context where I can't programatically tint an image, though I can change it's alpha value.  With some experimentation, I've found that I can layer a red, blue, and green version of the image, with specific alpha values, to produce a wide range of colors.  However, I am wondering if it's possible to achieve a true RGB representation through this method?  If so, what is the formula for converting an RGB value into different alpha values for the red, blue, and green layers.  </p>