Thanks @Ricko. In cases like this, I simply try to work with the original style as far as possible, and it is practical to "force" the Mike Schley cliffs to work as north-facing, even if it does mean quite a bit more effort. It would certainly be helpful to have some north-facing cliffs in this style already though!

For the central valley here, I simply added a Solid 10 polygon over the lower part to darken it a little. The effect is very subtle, but I found using the Solid 20 fill felt too obvious, whereas this seemed to help the effect just enough to fool the eye - to me, at least 😎.

Glad you got that sorted. Those are nice-looking floorplans!

Ellipses are fairly straightforward in CC3+. Just right-click on the Circle drawing tool icon - |CC2CIRP| - to call up the options list, and there's an Ellipse tool right there.

Spirals are a lot trickier though. Remy Monsen wrote a blog post about creating a macro to draw a spiral here, and although writing macros like this is pretty advanced stuff compared to simply drawing things and placing symbols using the program, they will let you automate much more sophisticated tasks with elegance. That blog post is the third in a short series of three on using macros, and you may find it useful to read through all of them (there are links at the end of that "spiral" post) if you're unfamiliar with how they're written before embarking on spiral design tests. And as usual, if you get stuck, just ask again here!

The other key element is the Color Key effect MUST be at the top of the effects list for that Sheet, or it doesn't work.

Your first comment sounds like the pink shape is being drawn on the wrong sheet. If you're using a drawing tool to create it, that may be set to a different default sheet than the one your Color Key effect is on. If so, it's easily changed by simply carrying out a Change Properties command immediately after finishing drawing the shape - so before it vanishes (you can check to see which sheet it's drawing on while you're drawing it in the information boxes along the top of the CC3+ screen).

I'm guessing that the fractal poly's ending up on the wrong sheet too, as there's no reason it wouldn't work properly just because it's a fractal shape.

Don't forget there's also the standard CC3+ B&W overland style, CC3 Vector BW, and if you have SS1, there's the Fantasy - Monochrome and Handrawn - Hollow (varicolor, so choose a suitable black for the lines) options. It's easy to forget these amongst all the many Annual options, I know!

Some of the varicolor sets can also be changed to actual, or more-or-less, B&W too, with a bit of experimentation.

Plus, depending on what sort of area you're intending, it may be possible to enlarge the symbols to keep them clear enough when resized (although this can lead to pixellation).

Depending on what style you're using, you may also be able to add a Whole Drawing Greyscale effect using the RGB Matrix to shift everything to look black-and-white.