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Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these colors too similar, as there are differences between the selected faces and the last selected face (active) and it might be confusing if you can't tell if a face is active of selected.

Reducing the alpha can help smooth it a little.
Default setting and set to the same color as selected faces:

![enter image description here][4]

Note that this value also affects active vertices and edges as well as faces.

[4]: https://i.sstatic.net/cxHES.png (Default (white))

Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these colors too similar, as there are differences between the selected faces and the last selected face (active) and it might be confusing if you can't tell if a face is active or selected.

Reducing the alpha can help smooth it a little.
Comparison of default setting and with it set to the same color as selected faces:

![enter image description here][4]

Note that this value also affects active vertices and edges as well as faces.

[4]: https://i.sstatic.net/cxHES.png (Default (white))

Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these colors the same, as there are differences between the selected faces and the last selected face (active) and it might be confusing if you can't tell if a face is active of selected.

Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these colors too similar, as there are differences between the selected faces and the last selected face (active) and it might be confusing if you can't tell if a face is active of selected.

Reducing the alpha can help smooth it a little.
Default setting and set to the same color as selected faces:

![enter image description here][4]

Note that this value also affects active vertices and edges as well as faces.

[4]: https://i.sstatic.net/cxHES.png (Default (white))

Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these identical, as there are differences between the selected faces and the last selected face (active).

Yes.

In CtrlAltU> User preferences > Themes > 3D view:

• The Face Selected color controls the color of the selected face

• The Active Vert/Edge/Face color controls the color of the last selected face.

However, I wouldn't recommend making these colors the same, as there are differences between the selected faces and the last selected face (active) and it might be confusing if you can't tell if a face is active of selected.