Right click on her model and click on "Add Override Materials" after that right click her model again but this time go to "Show in Element Viewer > Model" and you'll see the list of materials above it click the + and you'll see her materials (green name) if you wanted to changed her color just right-click the materials you want to changed and go to "Add Attribute > color" and type "$color" and that'll made her texture is black but don't be surprise next step you just click + on that material and go to $color you'll see it set to black you just click on that and you can changed her color materials :)
(important :This trick can't changed some material like other costume [default is fine],light color and more...)

Thanks, the colors looked too dark so I thought I was doing something wrong. ._.'
Some dye colors are harder to get than others if anyone knows what color the dyes are that would help, it is very hard to get light colors but there must be a way to get lighter colors. Either way thanks for not making me doubt myself!