What I've found is that you need to vary the blend mode of the Solid Color layers for various purposes. Sometimes "Color", sometimes "Multiply", sometimes "Soft Light" etc.
Yes, I know, I already told you. You do it at 100%, then lower the opacity of the whole layer. Or, in the Masks panel, lower the Density slider of the mask.
I need you to tell me exactly what you're trying to achieve with a specific photo.
https://www.howtogeek.com/wp-content/uploads/2016/02/img_56b919c530f71.png.pagespeed.ce.RD14gxqGT6.png
(Of course make sure the "Automatically adjust brightness" box is turned off.)