No, famously, graphite is a dull grey colour. And copper salts are generally green or blue in colour. It all depends on the mineral.
The colour of a mineral is one of its several distinctive characteristics, others are hardness, its density, its cleavage, its lustre, and so on. Each of these are of aid in mineral identification.
brightly colored males:)
A brightly colored blanket or cloak is called a serape. It is worn in Mexico, Central America and South America.
Cocks were created with brightly colored feathers to make them noticeable to females who may be attracted to the colors.
There are thousands of possibilities.
in jurneys
The tropics
The flowers that are not brightly colored either have smell to attract the insects for pollination during night or these are pollinated by wind.
They are brightly coloured to defer predators and warn them of it's poison.
angelfish
Neon
Western Meadowlark
Mandrill / Baboon