Hello Egor,

You are a genius :-). If i use a color (not a gray tint), then it fixes the problem. Using gray it does not work. But if i color the Brush object key color to red for instance, create a new pattern brush and colorization set to Hue Shift, it automatically recognises the red. And now the stroke color appears correctly on the stroke with the pattern brush applied to it.

I will make a lot of customers happy with this fix.

Thank you.

Onno

Ah, I see now.
The Hue Shift is a tricky one, and can be hard to graps.

Instead of the white key — which is ignored, as a grayscale color, according to the manual (https://helpx.adobe.com/illustrator/using/brushes.html): 'Hue Shift maintains black, white, and gray' — white has no hue in it to shift it, which leads to unexpected results. Once you chose a distinct color, it starts to work as expected — the key color gets recolored to the stroke chosen, and other colors in the module get shifted.

Please check the file.
Notice how two different brushes with pure yellow and pure magenta behave differently for the rope’s color.

Why Ai allows you to set the white? Because it’s the most prominent color in the brush module :)

The behaviour with white key though is indeed buggy. Thanks for bringing it up!

And here is a test file as requested...

Hello Egor,

Sure! I assumed people would have recognised the issue. But here is the screenshot including comments.

Hm. Can you please provide a test file (preferable), or at least a screenshot?

Egor, Thanks for the file. I appreciate your comment. But your file does not offer any explanations. There is an empty text layer. I have studied the brush paths & options but don't understand what you are trying to say regarding your examples.

David, does this file make any sense to you? Please study it

Sorry. Am still not sure that this is a bug or my lack of understanding of Art Brush Options. My test ai file attached is based around the definition of Hue (definition a colour or shade) I believe a "Hue Shift" should be a hue color either between the Key Color and other color(s) present in the custom brush OR a gradient stroke of changing hue between these colors.

In the file test below the colors are:
Black R=0 G=0 B=0
Red R=162 G=20 B=0

Therefore "hue shift" should show custom brush stroke hue or hues of values in between.

If it is a bug then apologies for posting on wrong branch.

David, can you share a file?
And please, next time log bug reports in the dedicated branch of the forums.

AI 24.3 (64 bit)

OS - Win 10 Intel Graphics (see screenshot files attached)

Action - Art Brush Options (Colorization)

Methods Available: None, Tints, Tints & Shades, Hue Shift

According to Key Color "Tips" I should be able to sample the stroke/fill color of my brush sample. See key color tips screenshot.

Method- Open Brush Library>Artistic>Artistic_Paintbrush (Choose Paintbrush Wide)

I drag this brush from Brush Panel onto empty Artboard
I use Selection Tool to select this brush sample and color stroke/fill red (see screenshot brush color1

I make the extra effort to add values to CMYK to make sure all components of color have a value.

Double click on this brush in Brushes Panel to view Art Brush Options of this brush. See screenshot.

The sample image in Art Brush Options does not reflect the color of sample on art board. As you can see it's black. I enable Key Color eyedropper. There is no change. Even when I use the eyedropper on the white background of the preview. I scroll through the colorization methods: None, Tints, Tints & Shades, Hue Shift

In short these options are

None work as intended. According to the Tips I should be able to detect component

I have tried this in both RGB & CMYK color modes (File>Document Color Mode)

Brush Colorization functionality appears broken.