Use of Tint
You can tint colour your eyebrows to change tone of their colour, to more darken or from red to brown. Let the tint sit on your brows for a couple of minutes before you remove it to see the impact. If you are not satisfied, use it again second time and see if there is some progress in comparison with the first coat.
Taupe Eye Shade
You can gently stroke the colour on your eye shadow to see the difference. You can choose the taupe colour shade according to your choice of your eyebrows colour tone. If you want them to be darker, choose a dark colour shade.
You can completely draw your eyebrows with a new colour after concealing the natural one. Glue your natural eyebrows and then select a concealer colour and cream to conceal the original eyebrow, and then select colour pencil to draw your eyebrow completely new. This technique is called Chola Eyebrows, but you can do it without even doing Chola eyebrows. In chola, you apply heavy makeup, but you can draw new eyebrows without applying heavy makeup.
Modify Natural Eyebrows
You can use any colour from your makeup to give a new shape to your eyebrows by adding colour at some places and widening the outline at certain places. You can also use a concealer at some places to give the new shape to your eyebrows the way you want. Concealing your brows at a place and angling it at another will completely give a new expression to them.
You can also use your hear style to cover up for bad eyebrows. If your hair falls on the eyebrows it can work as a cover for the eyebrows. You can seek help of a professional hair designer or artist.