If it is the plaster discoloring then the plaster company should fix it. If you let your chemicals get out of balance it is your own fault.
The blue/gray marks can be from your leaf skimmer - it has an aluminum frame- so when you scoop it leaves marks especially if you are using it with the net inverted. But those gray marks are only about as wide as a pencil and close to a straignt line. Broad marks indicate poor chemical maintenance. Your problem not the builder.
k
Depends on the manufacture. It will be covered under the bumper to bumper warranty. It may or may not be covered under the power train warranty. Read your warranty that came with the vehicle or call your dealer.
It really depends. It is always advisable to read the fine print of your warranty agreement before signing. Break repair is not usually coverd under the warranty. It is considered normal maintenance of the car and is the owners responsibility.
frogs are coverd in mucus
venus is coverd with clouds
Venus is coverd with Mountains, Valcanoes, and craters. There is no water on Venus.
probaly most of it was coverd in tea.
fur
leaves
Insultation
ice
A snow blanket
Scales