Hi, thank you for your feedback. I'm sorry to hear the finishing color on your painted roof was not what you were expecting. To verify if the color was mixed correctly, we’d suggest checking that the physical color swatch matches the paint dab on the lid of your paint can. If they match, the paint was properly mixed, and the color is correct. And in cases like this, the best solution would be to recoat in a different color. If the swatch doesn’t match the dab on your can’s lid, the color was incorrectly mixed. And we’d suggest recoating with new paint tinted to the correct color. Please keep in mind that different lighting will affect how a color looks and that our online color palette display may vary slightly from the actual colors due to color variances in monitor settings. To ensure you’re getting the right color for the area you are planning on painting, we recommend picking up a sample of the color and applying it first before purchasing your paint. Customer satisfaction is important to us. So, don't hesitate to contact us directly if you need further assistance. Have a wonderful day! –Joanna