On the first video I don't quite understand what you mean - the blacks don't look that faded to me.
The second one looks like the blacks have been raised so there is no "true" 0 IRE blacks in the image. This is easily done with the Color Board in FCPX by raising the Shadows (and possibly the Midtowns) in the Exposure tab. This one also looks like there might be a mild addition of a Bleach Bypass style filter and maybe in some sections even some tweaking of the shadows more toward blue or teal.
Hope this helps you get a start.