how can we make a universal indicator

Universal indicator is a mixture of methyl red, α naphtholphthalein, thymolphthalein, phenolphthalein and bromothymol blue. Universal indicator gives different colours at different pH. The pH range of universal indicator is 4 to 11.for e.g. at pH =4, it gives red colour and at 10,it gives blue violet colour, etc. The colour change shown by the universal indicator at different pH values is shown below: