I've been thinking about this for a while and maybe resolume 6 will open doorways for other solutions for this with the ability to set velocity feed back in the software for the MKII 40. So we can see the LED color of our MKII keys. (even though mine are taken up with other effects and RIP bank select)
In the mean time these are my thoughts.
I imagine it would be pretty nice to have a color picker anywhere that would apply the color you've select to layers you have chosen to apply the color picker too with some kinda setup process. Kinda like a light desk.
This is what I'm doing right now as a work around. I've tried to find a hardware solution for this.
I've used a expensive programmable RGB keyboard and set the color of the keycap F-keys to correlate with a specific FFGL pink effect in the layer. When I press the LED key like green for example it turns on the opacity for a single FFGL effect I set up to be green using the hue slider.
The 2 down sides are:
*The keyboard doesn't show you what key you selected. It's just not that smart. So it becomes confusing and finding the right shade of key you hit effectively makes a tool that is meant to help you into a memory challange.
*It takes a whole lota FFGL pink effect's with different hues in one layer to get you all the colors you'd want.
So why not do it on the comp you might wonder. If the entire comp goes one color when 2 or more layers are active they become really flat. So the fix is lets say you choose RED, you'd want the layer above it to be bumped a little in hue so you get a orange or yellow to separate the layers flatness. To do this means tons of FFGL pink effects in all the layers you want effected by your keyboard and tons of attention to your mapping.
A second thing I've tried is using my mpd232 with it's programmable RGB LED drum pads. The reason why this is a nice method is at least it's smart enough to change the LED color when it's been pressed and activated if you set the drum pad up to be in toggle mode. Then the rest is handled just like the keyboard method. Just you have a lot less keys so less color options which honestly sucks because I hate for a controller like that to be turned into a glorified color picker.
So I know programming isn't easy. I'm gona guess this is like asking for a small program in it self and Resolume doesn't have the space for it currently. I know. But I hope at some point Resolume can be ran on 2 screens effectively like a GrandMA desk and we can see a color picker using a touch screen.
The super cool thing about this is it lets you really work with the lighting guys to match and complement each other with color or at least gives you a tool to try.
In the mean time I'm up for other solutions. What I've figured out does technically work it's just really clunky.
Cheers