Programming a chase effect with colour changes with LED par cans

I'm scratching my head a bit in that I'm close to an effect but not quite gettin over the line. I have a row of RGB par cans and I want to program an effect where each can comes on in sequence in one colour, then another, then another and so on then repeats the pattern. So for example a red beam runs along the row, then a blue, then a green and so on. I've recorded a load of by type colour palettes (including a "black" pallete) and I'm using an absolute effect but I can't quite get the effect I want - it seems to cross fade between shades, even with the in time at 0. I'm guessing I'm just not getting the righ combination of groupoin and so on. Any suggestions, folks? 

 

Thanks.

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