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DuckDuckGoFlashFX shapes do not have a single fill color — they have a material stack of fill layers composited top to bottom. Editing a layer beneath an opaque one produces no visible change, which is the usual reason a color "does not apply".
If one or more of these match what you are seeing, you are on the right page.
Ordered from most to least likely. Work down the list — each cause is paired with what to do about it.
The top layer of the material stack renders over those below. Check which layer is selected in the Fill section, and reorder layers by dragging the grab handle.
Click the eye icon on that fill layer row to re-enable it.
Every color has an independent alpha channel. Raise the opacity slider under the color model inputs, or set the A value in the RGBA display.
If the layer is set to a gradient, texture or pattern fill, the color picker edits a stop or a component of that fill rather than a flat color. Change the fill type to Solid Color for a uniform result.
Each fill layer has its own blend mode. Set it back to Normal to see the color as picked.
If none of the causes above match, contact support with the steps to reproduce the problem, your browser and version, and any message from the browser console. You can reach us at support@flashfx.app.
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