what colour is iodine
Report Abuse. Iodine is a purple solid at room temperature. Some of these people are confusing iodine with iodine (or potassium iodide) solution which is a browny/orangey/yellowy colour.When this solution is added to starch...it turns black.Why the thumbs-down???it's true!!!ome of these people are confusing iodine with iodine (or potassium iodide) solution which is a browny/orangey/yellowy colour.When this solution is added to starch...it turns black. Why the thumbs-down???it's true!!!