Need to recreate multipy layer effect with black background

[beastiegirl]

Hi

I am working with a set of coloured shapes which i need to overlay so that any parts of them which overlap take on a new colour.

I can achieve this effect with coloured shapes above a white background layer using Multiply. My question is how can I mimic this effect when i am working with a black background layer? Multiply doesn't work, and i have tried using alternatives such as Screen and Lighten but these don't create a new colour when 2 shapes the same original colour overlay like multiply does...

Any help gratefully received

 

[audiopro]

You could reduce the opacity of the shapes which would give you varied colours as they overlap

Keith

http://www.studiosoft.co.uk

 

[apepp]

...have you tried making a white version of the shapes you are multiplying and placing it above the black layer but underneath the original shapes?...

...set the white shapes to normal layer mode...

Andrew