No worries, I was simply referring to using the mouseover to display a color near the mouse cursor (or right where you draw the face), or even just color the tooltip with said color. You could make the faces into "slots" and display the color there in the center or something too. If you're just drawing a 3d cube gizmo, I don't remember if you can set the material for it somewhere or not, but that makes me wonder how this face thing works for non-cube prefabs. Also, maybe you could just draw a slightly "larger" (white or dark-gray) 3d cube gizmo behind the existing (selected) gizmo to better display the color of those faces on the prefabs? -- It would save a bit of work messing with overlays and whatnot, while also showing the color clearly (and it would be nice to give the user the option to toggle this background cube/gizmo on or off). I get that not everyone is a UX wizard, and Unity is particularly unwieldy in that area. No worries. I am still hoping you can toggle between the most recently used colors via the same shortcut key (i.e. I hit "X" two times to toggle back to my third most recently-used color after using the first one -- i.e. colors A, B, C >>> "X" x1 = color B, x2 = color C, x3 = color A, x4 = color B, etc. ... ) As for the other shortcuts, simply holding Shift and right-clicking should be the color-picker (and should display the preview color and name before picking on the main palette window possibly). X, of course, should swap between the three most recently-used colors. Clicking in the Palette window on the colors there (with Shift held down) should likely set the most recently-clicked colors as the recently-used color for x1, x2, or x3 keypresses of the "X" shortcut (or indexes 1, 2, and 3 by default, if nothing but the default color index is selected yet). Showing the selected color/face name should really be visible in the palette (as well as the three face types that are selected for toggle between). Hopefully the above paragraph helps with this. I know it will be immensely helpful to have at least three "colors" available at all times. At the very least, as a more simple-to-implement alternative, let users use Shift + 1,2,3 to "pick" these color indexes from the palette via shortcut (and from nearby faces using RMB). RMB will set the color of whatever index slot is currently active (whether it's 1,2, or 3). However, X should cycle through and activate one of the three colors after another regardless of how they get assigned in the interface. Cycling through colors is very necessary for speed while assigning different prefabs similar colors/face types, limiting the need to go click on windows and color swatches constantly during this critical process. Right-clicking a face (with Shift) could bring up and close the palette window (in case it takes up too much screen real-estate), and it would be useful if that window popped-up right where the mouse cursor was (but this isn't necessary as long as it is at least in the center of the screen). Perhaps adding a new Layer via Shift + L (which would be consistent with Photoshop) or Shift + V to add a new volume rule area. Outside of what's been said above, I think that should cover the workflow in terms of necessity of speed and ease-of-use ergonomics. I've not played with the more advanced features, but slopes and sky aspects might need some love (to make them a little more straightforward in terms of discovery). Regardless, I've got no complaints otherwise.