I personally use the color blue for resistance (like the sky above) and orange for support (close to a ground color). You can choose as you like, or stay with one color since support often flips to resistance, and vice versa. I will also adjust the thickness of my lines depending on which time frame they were drawn. For example, a thicker line for a level drawn on the weekly vs a thinner line for the daily. Intraday levels can be drawn, such as pre-market highs and lows, but they hold less significance. It is also crucial to remember that S/R acts more like an area than an exact price, so price-action may go above resistance temporarily and then still reject, or the reverse for support. This is what is often referred to as a "fake out" or "liquidity grab."