Question

why train is only blue in colour please answer me​

Answer 1

The change of colour comes after over two decades when the train coaches were painted dark blue replacing the brick red colour. The last time the Railways implemented a new colour scheme was in the 1990s, when the dark blue colour became the symbol of the largest transport network in the country.

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Answer 2

Answer:

Some of the colours reflect clearly when the sun rays fall on them. The blue colour is one of the colour which reflect clearly when the sun rays fall on it