As your consciousness continues to move in your third eye, pastel colors begin to appear in your forehead. Sumptuous, glorious pinks, yellows, whites, blues, indigos, greens, and purples take their turn or play in combination in your forehead. Then, you may think you are seeing fireflies, lightning, or moonlight as your life force becomes more concentrated and more actively prepares you to behold higher consciousness. This process is readying you to experience your true nature as pure consciousness, pure spirit, pure awareness.
And then the light in your forehead blazes brighter than the sun! But, you find it is soothing to look into the awesome light, soothing to behold it. This is the brilliance of your inner light, your essence, revealing itself to you.
Raja yoga, particularly, requires a teacher because it is easy to strain yourself, and it’s also easy to delude yourself into high level hallucinations rather than actual experiences of your higher consciousness.
However, the genuine raja yogi lives in bliss, with his, or her, will surrendered to God. A raja yogi realizes the profound truth of the Biblical passage: If therefore thine eye be single, thy whole body shall be filled with light.