Transition metals tend to form more coloured ions and compounds more than most other elements either in solid form or dissolved in a solvent like water. Examples of the colours of some transition metal salts in aqueous solution are shown below (grey = colourless in the diagrams).
Welcome to the Machine. Welcome to the Machine is the second song on Pink Floyd's 1975 album Wish You Were Here. Written by bassist Roger Waters, it features heavily processed synthesizers and acoustic guitars, as well as a wide range of tape effects. 1 Theme.
The Logical Song  is a song by the English rock band Supertramp.omposition and lyrics [edit]. The Logical Song was mostly penned by Roger Hodgson; Rick Davies wrote the vocal harmony on the second chorus. The song makes use of keyboards, castanets, and an instrumental section.