no.
Unless you tell the program to change the alpha channal to blue for the blue one, then load it in, then change it to black for the black one then load it in. THEN they are ok. If you save them with an alpha channel (which isnt a colour so dont go saying what colour it used to be) they will be ok, otherwise you have to change the alpha mask colour to the colour you wnat masked each time you load the image. But once the images are loaded the have an alpha channel SO IT DOESNT MATTER what colour it used to be, cos NOW its an alpha layer
Unless you tell the program to change the alpha channal to blue for the blue one, then load it in, then change it to black for the black one then load it in. THEN they are ok. If you save them with an alpha channel (which isnt a colour so dont go saying what colour it used to be) they will be ok, otherwise you have to change the alpha mask colour to the colour you wnat masked each time you load the image. But once the images are loaded the have an alpha channel SO IT DOESNT MATTER what colour it used to be, cos NOW its an alpha layer