colour effects

BlitzPlus Forums/BlitzPlus Programming/colour effects

I`m wanting to use Fastpixelwrite/read to create a nice `laser` effect for a 2d game ( as in JETPAC or the arcade version of DEFENDER )
What i`m looking for is a way of calculating the fading/pulsing of colours to get a smooth transition from one colour to another over a fixed period of time.

eg.dark torquoise to light torquoise then fade back to black(transparent)
over ...say 1 second

Then use the same routine to do say... red to bright yellow then
back to black (transparent)

Hope this makes sense ...

Any ideas please

GP