In fact a pool can look different at different times of the day or under a cloudy vs a bright sky.
Dark vs light pool liner.
The biggest reason is simply that they typically do not live up to pool owners expectations of 100 light refraction on the surface of the water and a jet black pool.
It does add some some sparkle life depth compared to the lighter liner.
We have been fabricating liners for over 35 years and we have found that the perfect thickness for a pool liner is 20 mil.
The only time a thicker liner may be necessary is if the floor of the pool is very rough.
Pure white light contains all colors in the visible spectrum.
So picking a perfect pattern involves balancing different factors.
The science behind water color.
A black colored pool liner can make seeing the bottom of the pool difficult and associate greater depth.
A light pool liner is going to give a light airy feel kind of like a beach or tropical vibe.
But as liners become darker they are more inclined to fade over time due to uv damage and chlorine.
The three most common pool plaster colors are gray tan and white.
It is the best thickness for fit flexibility and strength.
Compared to the light pool liner we like the darker liner for several reasons.
Now one other thing to consider is how the bottom of a pool shows dirt.
Pool liner replacement contractors tend to shy away from black pool liners in general.
Deep blue a darker liner is more likely to absorb sunlight and therefore can help to warm your pool water.
Gray produces a dark blue water color in sunlight sandy or tan makes for a mild green color and white produces clear light blues.
Dark colored liners on the other hand can give your pool a rich bold look and make your pool seem deeper.
The same liner in one pool can look completely different in another pool.
A light pool liner can create more of a beach or tropical feeling and environment with light colored water.