Sequencer how to animate property from any starting value help

I’d like to animate a color value in sequencer to fade to blue. However the color value currently changes during gameplay so if I put a color key in sequencer when the sequence starts playing it will hard cut to the keyed color and then fade to blue. I need it to fade to blue from whatever color it currently is. Is there a way to add a blank key that takes on the current value when the sequence starts, or possibly a contribution amount so as the contribution increases the blue key overrides the current value?

You can set the track section to be relative. It will take on the existing values blend with the keyed values when evaluating sequencer. Setting the actual values is a bit cumbersome at the moment. There’s bugs where you try to set the value in sequencer but it actually shows you the resulting final value. So you might have to play around a bit to get the values you want. We’re looking to improve this eventually.

In this example, I have a point light and I set two keyframes, the first is 0,0,0 and the second is 0,0,1. Then I closed down sequencer so I could set the “default” value of the pointlight to 1,0,0 (or 255,0,0). This image shows you final values of the light - the r channel is 1 even though the keyframe is 0.