I need to paint only those face with default material inside a model of a window Ive created. But if I a replace with the Replace Material plugin it will change all the file default faces.
Open the Materials pallet with the “In Model” swatches selected ( the house icon), invoke the paint bucket tool with the modifier key pressed to take a sample, sample the surface with the color you wish to change, that material will be highlighted in the materials window as the active material, right click on it and choose edit, while in edit mode click on the default material in the upper left (or any other material to replace with), close the material from editing mode. Or, find the material to be removed in the pallet and right click and choose remove, either work.
This method works across contexts globally , in and out of components and groups. If you want to paint all the surfaces in a given context with the default material simply select all inside the context and apply the default material with the paint tool.