How do I make a clip fade in from white, without affecting / overlapping the previous clip?

Question

Hi,
The simple scenario is, I have two clips in my timeline. I have the the first clip that ends on a white flash frame. I want the second clip to fade in from white, so that there is visual continuity between the two clips. I don't want to change the duration of the two clips and add any additional frames.
Whenever I use the Fade To Colour dissolve, and simply switch out the black colour to white, which does exactly what I want, the dissolve always affects / overlaps the first clip when you subsequently put them together. How can I have only the second clip fade in from white and be affected by the Fade To Colour?
I've also tried using the compositing opacity handles in the show video animation dialogue but this only lets you fade the clip in from a black background. If I could change the colour of that compositing opacity background to white, so that it fades in from white instead of black, then that would be perfect but I can't see how you can do it? Can that be done?
I'd like the simplest and quickest possible solution, ideally changing the colour of the compositing opacity background would be best but how else can I have a clip fade in from white?
Thanks,
Clown Guy

Answer 1

I also have this question. Avid lets you change the frame up/down -  to/from a dissolve point. In other words, I could have a dissolve go "up" at, for example, 5 frames, and then "down" at, say, 15 frames. As it stands now, FCPX only allows you the same amount of frames on either side of the cross-dissolve. (A 30-frame dissolve is split 15 frames on either side of the transition.)
Other NLE's give you the option for a dissolve to occur at the BEGINNING, in the MIDDLE (STANDARD CROSS-DISSOLVE) or at the END of a transition. (Depending, of course, on if you have the "handles" to execute the transition,)
Can we achieve this in FCPX? Is this where we launch the "precision editor?"