I'm in the process of picking a DB color and really want a dark pool, but I want it a very deep shade of blue. I only get full sun mid day for about four hours so I don't want onyx. I have samples of Cobalt Blue and it is 6x midnight blue and 4x onyx, steel blue I believe is 8x tahoe blue and 2x onyx, I'm also looking at ocean blue but don't know the combination, does anyone know? Does anyone have a pool in any of those colors? And how about price? I still don't know how much more they cost in comparison to regular DB colors. I'd love any input or pictures. Thank you!