You may have already noticed
this little test tube animation if you arrived at this
page via
the Flash Effects page of the site. You will note that
the liquid spilling out of the test tube continually tweens
from
one
random colour to
another.
The effect is achieved by using the liquid shape
layer as a mask. It masks a movie clip which is targetted
by the actionscript to select random colours and tween
between them.
This random colour effect can be used as a background,
on buttons or in a mask. I have used it in a flash lavalamp
once for Mathmos. By changing the alpha of the clip I was
able
to set random globules to move up and down inside
a lavalamp shape whilst the colours
changed... well mellow man!
