We've got a fabulous solution for scene setting literally hundreds (if you want) of DMX or SPi (170 pixels per strip / universe) from OpenRemote.
You can use the colour picker directly and it's not too difficult to use sliders either (for individual channels, consecutive channel or banks of channels {when used in rules})
We plan to use this feature in October for a project with over 80 metres of LED SPi by providing the client with a selection of colour pickers.
With many more architectural projects to follow.
If you want to know any more, leave a message here and I'll fill in the blanks.
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One note, this is not a replacement for a lighting desk with full chase and cross fade functions, this is purely a scene setter.
Although we are looking at creating a chase feature, just not within OpenRemote.