I'm using AWT Colors within my Sketch and I have methods to set the transparency and convert them to Processing's int equivalent (I'm using Eclipse and the main PApplet class).

1. public Color setAlpha(final Color color, final int transparency) {
2.   return new Color(color.getRed(), color.getGreen(), color.getBlue(), transparency);
3. }
4. public void fill(final Color color) {
5.   fill(color.getRGB());
6. }

This works fine for all colors except pure blue. If I go down with the transparency, the fill almost gets black, but then suddenly switches to white. Colors other than blue don't do that, so I suspect, it's some kind of overflow problem. However, I have no clue what the problem might be.

I debugged the Color values of Red / Green / Blue / Alpha / RGB int and got for the faulty case:
0/0/255/0/255

Any ideas? 

Best regards,
Eric