Add color as well as dimmer level to fade over time

I have a couple of rules that use fade over time to changes dimmers from 0 to 100 and the bulb color from daylight white to warm white. Currently I need to do this in two steps: first to change the dimmer level, and then using a transition scene to gradually change color from one white to the other. It would be cool if I could do this all in one step. For my use case, I don't really care what the beginning color of the bulb is, as long as I can end up where I want to be.

I'm still doing it in two steps. The first one changes the level and the second changes the color. This was a feature request, but as far as I know it's never been implemented.

Here's a snip from the rule where I do this: