Hi! I've got a quick question.

Hi!
I’ve got a quick question.
Can color correction and temperature be used with analog pwm output?

That’s a good question, and since an addLeds line isn’t used initially there doesn’t seem to be an easy way to tack on a cc.
Can you give some more details on what you want to do or fix? Maybe someone can suggest an alternate solution.

It’s just simple rgb led strip driver based on arduino. Since there is a lot of free memory I wanted to add some features to it beside simple setting desired color. What if I add dummy controller, eg. ws2811 and then take out corrected rgb values?

Yes, that sounds good. You can hard code it to a pixel length of one. After setting it’s color, skip calling show() and just grab it’s r,g,b values to plug into the simple rgb strip.
Let us know how this works out.